Science

Brain Implant Allows Fully Paralyzed Patient to Communicate

In 2020 Ujwal Chaudhary, a biomedical engineer then at the University of Tübingen and the Wyss Center for Bio and Neuroengineering in Geneva, watched his computer with amazement as an experiment that he had spent years on revealed itself. A 34-year-old paralyzed man lay on his back in the laboratory, his head connected by a …

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Internation Energy Agency Says Nations Should Conserve Fuel as Global Energy Crisis Looms

The war in Ukraine is setting into motion the first global energy crisis of its kind, and nations around the world should respond by reducing their use of oil and gas, the leader of a key international organization warned on Friday. The International Energy Agency, which was formed in the wake of the 1973 oil …

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Amazon Rainforest May Be Approaching a Critical Tipping Point, Study Finds

The Amazon is losing its ability to recover from disturbances like droughts and land-use changes, scientists reported Monday, adding to concern that the rainforest is approaching a critical threshold beyond which much of it will be replaced by grassland, with vast consequences for biodiversity and climate change. The scientists said their research did not pinpoint …

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Finding a Retirement Home for 466 Frozen Flatworm Fragments

Marian Litvaitis, a professor emerita at the University of New Hampshire, decided to retire in December 2019. And she wondered what would happen to her worms. Not just any worms: marine polyclad flatworms. They are visually striking, from the skunk-colored ruffles of Pseudobiceros gratus to the gold-rimmed fuchsia body of Pseudoceros ferrugineus. Dr. Litvaitis had …

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Making a Camera for the James Webb Space Telescope

This interview is part of our latest Women and Leadership special report, which highlights women making significant contributions to the major stories unfolding in the world today. The conversation has been edited and condensed. Marcia J. Rieke, 70, is the research group leader for the near-infrared camera, or NIRCam, on the James Webb Space Telescopea …

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Patient Who Recieved Groundbreaking Pig Heart Transplant Dies

The first person to have his failing heart replaced with that of a genetically altered pig in a groundbreaking operation died Tuesday afternoon at the University of Maryland Medical Center, two months after transplant surgery. David Bennett Sr., who lived in Maryland, was 57. He had severe heart disease, and had agreed to receive the …

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What a Power Cutoff Could Mean for Chernobyl’s Nuclear Waste

The long-defunct Chernobyl plant in Ukraine is completely dependent on outside sources of electricity. So when that power is cut, as Ukrainian officials and the International Atomic Energy Agency say it has been by Russian troops, problems can result. As of Wednesday Chernobyl, the scene of the worst nuclear disaster in history when one of …

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