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  • Chemical and biomolecular engineering professor Ying Diao and collaborators have repurposed a failed cancer drug into a new type of organic semiconductor for use in transistors and chemical sensors.

    Researchers repurpose failed cancer drug into printable semiconductor

    Many potential pharmaceuticals end up failing during clinical trials, but thanks to new research from the University of Illinois, biological molecules once considered for cancer treatment are now being repurposed as organic semiconductors for use in chemical sensors and transistors.

  • An artist rendering of a new generation of bio-bots – soft robotic devices powered by skeletal muscle tissue stimulated by on-board motor neurons.

    Researchers build microscopic biohybrid robots propelled by muscles, nerves

    Researchers have developed soft robotic devices driven by neuromuscular tissue that triggers when stimulated by light – bringing mechanical engineering one step closer to developing autonomous biobots.

  • Physics professor Nadya Mason is one of five Urbana-Champaign faculty members named as University Scholars.

    Five professors named University Scholars for Urbana-Champaign campus

    Five Urbana-Champaign campus professors have been named University Scholars in recognition of their excellence in teaching, scholarship and service.

  • University of Illinois geologists Jack Albright, left, and professor Patricia Gregg are part of a team that has developed new computer models to help researchers better forecast volcanic eruptions.

    Researchers unveil new volcanic eruption forecasting technique

    Volcanic eruptions and their ash clouds pose a significant hazard to population centers and air travel, especially those that show few to no signs of unrest beforehand. Geologists are now using a technique traditionally used in weather and climate forecasting to develop new eruption forecasting models. By testing if the models are able to capture the likelihood of past eruptions, the researchers are making strides in the science of volcanic forecasting

  • Mechanical science and engineering professor Nenad Miljkovic, left, and graduate students Kalyan Boyina and Yashraj Gurumukhi collaborated with researchers at Kyushu University, Japan, to develop a system that can de-ice surfaces in seconds.

    Researchers develop technique to de-ice surfaces in seconds

    Airplane wings, wind turbines and indoor heating systems all struggle under the weight and chill of ice. Defrosting and de-icing techniques are energy-intensive, however, and often require large masses of ice to melt completely in order to work. Researchers from the University of Illinois and Kyushu University in Japan have developed a new technique that requires only a thin layer of ice at the interface of a surface to melt, allowing it to slide off under the force of gravity.

  • U. of I. chemistry professor Steven Zimmerman, graduate student Ephraim Morado and their colleagues are inventing new ways to degrade polyurethane and reuse the waste.

    New technique gives polyurethane waste a second life

    Polyurethane is used in a wide range of materials, including paints, foam mattresses, seat cushions and insulation. These diverse applications generate large amounts of waste. A team at the University of Illinois has developed a method to break down polyurethane waste and turn it into other useful products.

  • Mechanical sciences engineering professor Gaurav Bahl, left, and graduate student Seunghwi Kim confirmed that backscattered light waves can be suppressed to reduce data loss in optical communications systems.

    Researchers turn off backscattering, aim to improve optical data transmission

    Engineers at the University of Illinois have found a way to redirect misfit light waves to reduce energy loss during optical data transmission. In a study, researchers exploited an interaction between light and sound waves to suppress the scattering of light from material defects – which could lead to improved fiber optic communication. Their findings are published in the journal Optica.

  • Professor Ying Diao, left, postdoctoral researcher Kyung Sun Park, seated, and graduate student Justin Kwok have found that twisted polymers can be flattened via the printing process to make them better at conducting electricity.

    Printing flattens polymers, improving electrical and optical properties

    Researchers have found a way to use polymer printing to stretch and flatten twisted molecules so that they conduct electricity better. A team led by chemical and biomolecular engineers from the University of Illinois report their findings in the journal Science Advances.

  • Laboratory-engineered membrane defects with edges that spiral downward would give biomolecules like DNA, RNA and proteins no other option than to sink into a nanopore for delivery, sorting and analysis.

    Researchers embrace imperfection to improve biomolecule transport

    While watching the production of porous membranes used for DNA sorting and sequencing, University of Illinois researchers wondered how tiny steplike defects formed during fabrication could be used to improve molecule transport. They found that the defects – formed by overlapping layers of membrane – make a big difference in how molecules move along a membrane surface. Instead of trying to fix these flaws, the team set out to use them to help direct molecules into the membrane pores.

  • Industrial and enterprise systems engineering professor Lavanya Marla and collaborators used artificial intelligence to design a customized pricing model for airline customers.

    Artificial intelligence could help air travelers save a bundle

    Researchers are using artificial intelligence to help airlines price ancillary services such as checked bags and seat reservations in a way that is beneficial to customers’ budget and privacy, as well as to the airline industry’s bottom line.

  • An artist rendering of the MacEtch-produced fin array structures in a beta-gallium oxide semiconductor substrate from professor Xiuling Li’s latest project.

    Search for new semiconductors heats up with gallium oxide

    University of Illinois electrical engineers have cleared another hurdle in high-power semiconductor fabrication by adding the field’s hottest material – beta-gallium oxide – to their arsenal. Beta-gallium oxide is readily available and promises to convert power faster and more efficiently than today’s leading semiconductor materials – gallium nitride and silicon, the researchers said.

  • University of Illinois researchers Jeremy Guest, left, John Trimmer and Daniel Miller have developed a conceptual roadmap to help guide others through the unexplored environmental and economic aspects of sanitation.

    Human waste an asset to economy, environment, study finds

    Human waste might be an unpleasant public health burden, but scientists at the University of Illinois see sanitation as a valuable facet of global ecosystems and an overlooked source of nutrients, organic material and water.

  • Chemical and biomolecular engineering researchers Johnny Ching-Wei Lee, left, professor Simon Rogers and collaborators are challenging previous assumptions regarding polymer behavior with their newly developed laboratory techniques that measure polymer flow at the molecular level.

    Researchers unveil how soft materials react to deformation at molecular level

    Before designing the next generation of soft materials, researchers must first understand how they behave during rapidly changing deformation. In a new study, researchers challenged previous assumptions regarding polymer behavior with newly developed laboratory techniques that measure polymer flow at the molecular level.

  • Illinois Sustainable Technology Center researchers Elizabeth Meschewski, left, and Nancy Holm and collaborators developed a systematic study to test the effectiveness of the soil additive biochar and found that it may not be as effective as previously thought.

    Biochar may boost carbon storage, but benefits to germination and growth appear scant

    Biochar may not be the miracle soil additive that many farmers and researchers hoped it to be, according to a new University of Illinois study. Biochar may boost the agricultural yield of some soils – especially poor quality ones – but there is no consensus on its effectiveness. Researchers tested different soils’ responses to multiple biochar types and were unable to verify their ability to increase plant growth. However, the study did show biochar’s ability to affect soil greenhouse gas emissions.

  • Using newly developed geological techniques, researchers, from left, microscopy expert Mayandi Sivaguru, Kaitlin Fouke, geologist and microbiologist Bruce Fouke, Kyle Fouke, Lauren Todorov and their colleagues made discoveries about the formational history of Porites coral skeletons to fine-tune the records used to make global climate predictions.

    New insight from Great Barrier Reef coral provides correction factor to global climate records

    Newly developed geological techniques help uncover the most accurate and high-resolution climate records to date, according to a new study. The research finds that the standard practice of using modern and fossil coral to measure sea-surface temperatures may not be as straightforward as originally thought. By combining high-resolution microscopic techniques and geochemical modeling, researchers are using the formational history of Porites coral skeletons to fine-tune the records used to make global climate predictions.

  • New research reveals that the bacterium Sulfurihydrogenibium yellowstonense thrives in harsh environments with conditions like those expected on Mars.

    'Fettuccine' may be most obvious sign of life on Mars, researchers report

    A rover scanning the surface of Mars for evidence of life might want to check for rocks that look like pasta, researchers report in the journal Astrobiology.

    The bacterium that controls the formation of such rocks on Earth is ancient and thrives in harsh environments that are similar to conditions on Mars, said University of Illinois geology professor Bruce Fouke, who led the new, NASA-funded study.

  • Chemistry professor Prashant Jain, left, and postdoctoral researcher Sungju Yu have developed an artificial photosynthesis process that converts excess CO2 into valuable fuels, bringing green technology one step closer to large-scale solar energy storage.

    Artificial photosynthesis transforms carbon dioxide into liquefiable fuels

    Chemists at the University of Illinois have successfully produced fuels using water, carbon dioxide and visible light through artificial photosynthesis. By converting carbon dioxide into more complex molecules like propane, green energy technology is now one step closer to using excess CO2 to store solar energy – in the form of chemical bonds – for use when the sun is not shining and in times of peak demand.

  • Chemical and biomolecular engineering professor Charles Schroeder, left, and graduate student Yuecheng (Peter) Zhou study the flow dynamics of ring and linear polymer solutions to tease out clues about how synthetic polymers interact during processing.

    Polymers jump through hoops on pathway to sustainable materials

    Recyclable plastics that contain ring-shaped polymers may be a key to developing sustainable synthetic materials. Despite some promising advances, researchers said, a full understanding of how to processes ring polymers into practical materials remains elusive. In a new study, researchers identified a mechanism called “threading” that takes place when a polymer is stretched – a behavior not witnessed before. This new insight may lead to new processing methods for sustainable polymer materials.

  • Jeffrey Moore, left, King Li, postdoctoral researcher Gun Kim and graduate student Abigail Halmes have collaborated to develop an ultrasound-activated synthetic molecule that can emit light deep inside biologic tissue for a variety of medical uses and therapies.

    Mechanics, chemistry and biomedical research join forces for noninvasive tissue therapy

    A fortuitous conversation between two University of Illinois scientists has opened a new line of communication between biomedical researchers and the tissues they study. The new findings, reported in the Proceedings of the National Academy of Science, show that high-intensity focused ultrasound waves can penetrate biological tissue to activate molecules able to perform specific tasks.

  • University of Illinois scientists have linked historical crop insurance, climate, soil and corn yield data to quantify the effects of excessive rainfall on corn yield.

    Excessive rainfall as damaging to corn yield as extreme heat, drought

    Recent flooding in the Midwest has brought attention to the complex agricultural problems associated with too much rain. Data from the past three decades suggest that excessive rainfall can affect crop yield as much as excessive heat and drought. In a new study, an interdisciplinary team from the University of Illinois linked crop insurance, climate, soil and corn yield data from 1981 through 2016.

  • Anthropology professor Kathryn Clancy has co-written numerous studies about sexual harassment and gender harassment in academic science.

    How does sexual harassment affect young women in physics?

    In a study reported in the journal Physical Review Physics Education Research, nearly 75% of 471 undergraduate women in physics who responded to a survey offered during a professional conference reported having experienced at least one type of sexual harassment – mostly gender harassment – in their field. U. of I. anthropology professor Kathryn Clancy, a co-author of the report, talked to News Bureau life sciences editor Diana Yates about the study, which also examined the respondents’ feelings of belonging and legitimacy as scientists and scholars.

  • Materials science and engineering professor Qian Chen, center, and graduate students Binbin Luo, left, and Ahyoung Kim find inspiration in biology to help investigate how order emerges from self-assembling building blocks of varying size and shape.

    Multistep self-assembly opens door to new reconfigurable materials

    CHAMPAIGN, Ill. — Self-assembling synthetic materials come together when tiny, uniform building blocks interact and form a structure. However, nature lets materials like proteins of varying size and shape assemble, allowing for complex architectures that can handle multiple tasks.

     

  • Chemical and biomolecular engineering professor and department chair Paul Kenis, right, and graduate student Shawn Lu are co-authors of a new study that examines the feasibility of a new CO2 waste-to-value technology.

    Study: Reducing energy required to convert CO2 waste into valuable resources

    CHAMPAIGN, Ill. — Surplus industrial carbon dioxide creates an opportunity to convert waste into a valuable commodity. Excess CO2 can be a feedstock for chemicals typically derived from fossil fuels, but the process is energy-intensive and expensive. University of Illinois chemical engineers have assessed the technical and economic feasibility of a new electrolysis technology that uses a cheap biofuel byproduct to reduce the energy consumption of the waste-to-value process by 53 percent.

  • Illinois chancellor and chemist elected to American Academy of Arts and Sciences

    Chancellor Robert J. Jones and chemistry professor Catherine J. Murphy have been elected as members of the American Academy of Arts and Sciences.

  • A new drug-delivery system that contains crystalized catechin – an antioxidant found in green tea and fruit – can sense trouble and respond by releasing antioxidant to restore a normal heart rate to water fleas undergoing cardiac stress brought on by high oxidant levels

    Smart antioxidant-containing polymer responds to body chemistry, environment

    Oxidants found within living organisms are byproducts of metabolism and are essential to wound-healing and immunity. However, when their concentrations become too high, inflammation and tissue damage can occur. University of Illinois engineers have developed and tested a new drug-delivery system that senses high oxidant levels and responds by administering just the right amount of antioxidant to restore this delicate balance.

  • Event Horizon Telescope Project theoretical working group leader Charles Gammie, center, and graduate students Ben Prather, left, and Charles Wong helped interpret the massive amounts of data used to produce the first image of a black hole.

    How is Illinois contributing to the Event Horizon Telescope Project?

    The Event Horizon Telescope Project announced that it has captured the first image of a black hole. The feature is located at the center of Messier 87 – a giant elliptical galaxy in the constellation Virgo. News Bureau physical sciences editor Lois Yoksoulian spoke with University of Illinois physics and astronomy professor Charles Gammie, who heads up the theory working group for the large, multi-institutional collaboration.

  • 'Quantum Rhapsodies' performance explores quantum physics, its role in our universe

    “Quantum Rhapsodies” uses narration, video images and the music of the Jupiter String Quartet to explore the world of quantum physics.

  • An October 2017 storm exposed wetlands to wave action and burial by beach sand at the shoreline of Lake Michigan at Illinois Beach State Park.

    Freshwater coastal erosion alters global carbon budget

    Shoreline erosion can transform freshwater wetlands from carbon-storage pools to carbon sources, according to a new study led by Illinois State Geological Survey researchers. Wave action and high water levels sweep away soils and plants at a rate much higher than nature can replace them. An accurate measurement of this carbon budget imbalance may help better prioritize coastal management efforts and improve global carbon-cycle models.

  • A new assessment makes grim predictions about the effects of climate change in the Great Lakes region.

    Report outlines growing climate change-related threats to Great Lakes region

    A team of Midwestern climate scientists has released a new report with grim predictions about the impact of climate change on the Great Lakes region. The report foresees a growing trend of wetter winters and springs, with increases in heavy rain events leading to flooding, particularly in urban areas with hard surfaces that cannot absorb the excess water. Rural areas will likely see more erosion, and unpredictable cycles of heat and rainfall could undermine agriculture.

  • People with cystic fibrosis are missing a protein in the lining of the lung that releases bicarbonate, a key infection-fighting agent. The drug amphotericin can form channels to release bicarbonate in lung tissue, restoring the airway surface liquid’s antibiotic properties.

    Potential new cystic fibrosis treatment uses 'molecular prosthetic' for missing lung protein

    An approved drug normally used to treat fungal infections could also do the job of a protein channel that is missing or defective in the lungs of people with cystic fibrosis, operating as a prosthesis on the molecular scale, says new research from the University of Illinois and the University of Iowa.

    Cystic fibrosis is a lifelong disease that makes patients vulnerable to lung infections. There are treatments for some but not all patients, and there is no cure. The drug restored infection-fighting properties in lung tissue donated by human patients as well as in pigs with cystic fibrosis. It has potential to become the first treatment to address all types of cystic fibrosis, regardless of the genetic mutation that causes the protein deficiency.

  • Potholes, like this one on the campus of University of Illinois at Urbana-Champaign, are a common obstacle this winter.

    Is there a cure for potholes?

    Temperatures may be on the rise, but many motorists and pedestrians remain focused on the ground as they attempt to navigate safely around the many potholes that develop this time of year. Industrial and enterprise systems engineering professor Henrique M. Reis spoke with Illinois News Bureau physical sciences editor Lois Yoksoulian about how potholes form and if there are any potential solutions.

  • Researchers analyzed the orthodentin and the cementum in the sloth tooth. Pits mark locations where samples were collected for analysis.

    Ancient extinct sloth tooth in Belize tells story of creature’s last year

    Some 27,000 years ago in central Belize, a giant sloth was thirsty. The region was arid, not like today’s steamy jungle. The Last Glacial Maximum had locked up much of Earth’s moisture in polar ice caps and glaciers. Water tables in the area were low.

    The sloth, a beast that stood up to 4 meters tall, eventually found water – in a deep sinkhole with steep walls down to the water. That is where it took its final drink.

  • Haitham Al-Hassanieh, left, and Diwakar Shukla are recipients of 2019 Alfred P. Sloan Foundation fellowships.

    Two Illinois professors named Sloan Research Fellows

    Electrical and computer engineering professor Haitham Al-Hassanieh and chemical and biomolecular engineering professor Diwakar Shukla are recipients of this year's Sloan Research Fellowships from the Alfred P. Sloan Foundation. According to the foundation, the awards "honor early career scholars whose achievements mark them as among the most promising researchers in their fields."

  • Atmospheric sciences professor Don Wuebbles is an expert on climate and climate change

    Are global warming, recent Midwest cold snap related?

    Last month, the Midwest experienced record-breaking cold temperatures and many are wondering how, when the climate is experiencing an unprecedented warming trend, we can still experience such frigid cold. News Bureau physical sciences editor Lois Yoksoulian asked University of Illinois atmospheric sciences professor Don Wuebbles to explain.

  • il and environmental engineering professor Tami Bond is part of a team modeling the impact of the freight industry on human health and the eniviroment.

    New model predicts how ground shipping will affect future human health, environment

    The trucks and trains that transport goods across the United States emit gases and particles that threaten human health and the environment. A University of Illinois-led project developed a new model that predicts through 2050 the impact of different environmental policies on human mortality rates and short- and long-term climate change caused by particulate and greenhouse gas emissions.

  • C.K. Gunsalus, the director of the National Center for Professional and Research Ethics at the University of Illinois, is a member of a national team of experts calling for a U.S. research integrity advisory board.

    Experts call for national research integrity advisory board

    It’s been proposed before, but so far no one has heeded the call for an official advisory board to support ethical behavior in research institutions. Today, leaders in academia with expertise in the professional and ethical conduct of research have formalized a proposal to finally assemble such an advisory board. The proposal appears in the journal Nature.

  • Illinois Sustainable Technology Center researcher John Scott is part of a team of researchers who are among the first to explore microplastic contamination in groundwater systems.

    Microplastic contamination found in common source of groundwater, researchers report

    Microplastics contaminate the world's surface waters, yet scientists have only just begun to explore their presence in groundwater systems. A new study is the first to report microplastics in fractured limestone aquifers – a groundwater source that accounts for 25 percent of the global drinking water supply.

  • Chemical and biomolecular engineering professor Damien Guironnet, right, and graduate student Dylan Walsh developed a new technique that allows them to program the size, shape and composition of soft materials.

    Researchers gain control over soft-molecule synthesis

    By gaining control over shape, size and composition during synthetic molecule assembly, researchers can begin to probe how these factors influence the function of soft materials. Finding these answers could help advance virology, drug delivery development and the creation of new materials. 

  • Chemistry professor M. Christina White, right, and graduate student Jinpeng Zhao developed a new catalyst that has the potential to advance the pace and efficiency of drug development.

    Researchers diversify drug development options with new metal catalyst

    A University of Illinois team of researchers led by chemistry professor M. Christina White has developed a new manganese-based catalyst that can change the structure of druglike molecules to make new drugs, advancing the pace and efficiency of drug development. 

  • Illinois physics professor and Nobel Laureate Anthony Leggett talks about the 1938 discovery of superfluidity and its significance to low-temperature physics.

    Superfluidity: what is it and why does it matter?

    2018 marks the 80th anniversary of the landmark physics discovery of superfluidity. News Bureau physical sciences editor Lois Yoksoulian asked University of Illinois physics professor and 2003 Nobel Prize winner Anthony Leggett about the significance of the historic finding.

  • The annual Global Carbon Budget report found that, although fossil fuel emissions remained steady for three years ending in 2016, atmospheric concentrations of carbon dioxide are at an all-time high and emissions are on the rise again, says atmospheric sciences professor Atul Jain.

    What is on the horizon for global carbon emissions?

    On Dec. 5, the Global Carbon Project published the Global Carbon Budget 2018, giving world leaders access to data on atmospheric carbon concentrations, emissions and trends. Illinois atmospheric scientist Atul Jain was among the many scientists worldwide who contributed data to the report. Jain talked about the carbon budget and this year’s findings with News Bureau physical sciences editor Lois Yoksoulian.

  • The research team includes, from left, agricultural engineering professor Yuanhui Zhang; undergraduate student Zhenwei Wu; graduate student Timothy Lee; visiting scholar Buchun Si; Illinois Sustainable Technology Center senior research engineer B.K. Sharma; and Chia-Fon Lee, a professor of mechanical science and engineering at the U. of I.

    Team converts wet biological waste to diesel-compatible fuel

    In a step toward producing renewable engine fuels that are compatible with existing diesel fuel infrastructure, researchers report they can convert wet biowaste, such as swine manure and food scraps, into a fuel that can be blended with diesel and that shares diesel’s combustion efficiency and emissions profile.

    They report their findings in the journal Nature Sustainability.

  • Illinois state climatologist Jim Angel, who is retiring in December, discusses his career, climate change and the recently released National Climate Assessment.

    Can we talk about the Illinois climate?

    Jim Angel, the Illinois state climatologist, has announced that he will retire in December 2018 after 34 years at the Illinois State Water Survey. News Bureau physical sciences editor Lois Yoksoulian spoke with him about his career, climate change and the National Climate Assessment released on Black Friday.

  • Chemistry professor Prashant Jain is one of eleven Illinois faculty members on the Clarivate Analytics Highly Cited Researchers list, 2018.

    Eleven Illinois researchers rank among world’s most influential

    Eleven faculty members at the University of Illinois at Urbana-Champaign have been named to the 2018 Clarivate Analytics Highly Cited Researchers list.

  • Narayana Aluru, William Gropp, Andrew Leakey and Ray Ming are among 416 scientists elected AAAS Fellows this year.

    Four Illinois faculty members elected AAAS Fellows

    Four professors at the University of Illinois at Urbana-Champaign have been elected 2018 Fellows of the American Association for the Advancement of Science. They are: mechanical science and engineering professor Narayana Aluru, computer science professor William Gropp and plant biology professors Andrew Leakey and Ray Ming.

  • University of Illinois engineering researcher Ann-Perry Witmer has developed a new computer algorithm that helps engineers who work internationally incorporate the influences of local values into their infrastructure designs.

    Diagnostic tool helps engineers to design better global infrastructure solutions

    Designing safe bridges and water systems for low-income communities is not always easy for engineers coming from highly industrialized places. A new discipline called contextual engineering helps engineers think beyond personal values, expectations and definitions of project success when tackling global infrastructure problems.

  • University of Illinois at Urbana-Champaign atmospheric sciences professor Deanna Hence discusses how some hurricanes become so large, the paths they take and how global climate change may affect these factors.

    Monster hurricanes: Why have recent storms been so huge?

    Hurricane Michael made landfall near Mexico Beach, Florida, as the first Category 4 storm in recorded history to reach shore in the northeast Gulf Coast. News Bureau physical sciences editor Lois Yoksoulian spoke with Illinois atmospheric sciences professor Deanna Hence about the storm’s size, strength and path, and the impact of global climate change on future hurricanes. 

  • Postdoctoral researcher Jaemin Kim, professor of chemical and biomolecular engineering Yang Hong and graduate student Pei-Chieh (Jack) Shih are part of a team that developed a new material that helps split water molecules for hydrogen fuel production.

    New, highly stable catalyst may help turn water into fuel

    Breaking the bonds between oxygen and hydrogen in water could be a key to the creation of hydrogen in a sustainable manner, but finding an economically viable technique for this has proved difficult. Researchers report a new hydrogen-generating catalyst that clears many of the obstacles – abundance, stability in acid conditions and efficiency.

  • Professor of chemical and biomolecular engineering Simon Rogers, left, postdoctoral researchers Jun Pong Park and Yongbeom Seo and professor of chemical and biomolecular engineering Hyunjoon Kong led an international team that developed hydrogen peroxide-bubbling microparticles that may help eradicate dangerous biofilms.

    Researchers develop microbubble scrubber to destroy dangerous biofilms

    Stiff microbial films often coat medical devices, household items and infrastructure such as the inside of water supply pipes, and can lead to dangerous infections. Researchers have developed a system that harnesses the power of bubbles to propel tiny particles through the surfaces of these tough films and deliver an antiseptic deathblow to the microbes living inside.

  • Designer enzyme conquers sulfite reduction, a bottleneck in environmental cleanup

    CHAMPAIGN, Ill. — Researchers have cleared one hurdle toward environmental cleanup of certain contaminants with a newly designed synthetic enzyme that reduces the compound sulfite to sulfide – a notoriously complex multistep chemical reaction that has eluded chemists for years.