WASHINGTON (Reuters) – An immense dust storm that may soon encircle Mars is threatening one of NASA’s rovers on the planet’s surface, with the vehicle becoming dormant and unresponsive at a site called Perseverance Valley, U.S. space agency officials said on Wednesday. The officials, however, expressed optimism that the Opportunity rover, which was built to
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WASHINGTON (Reuters) – Fossils of two amphibians that lived within the Antarctic circle 360 million years ago are forcing scientists to rethink the origins of land vertebrates, including where these pioneers first appeared and the climatic conditions that spawned them. Two newly discovered early amphibians Tutusius and Umzantsia that lived about 360 million years ago
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(Reuters) – Scientists seeking new ways to fight drug-resistant superbugs have mapped the genomes of more than 3,000 bacteria, including samples of a bug taken from Alexander Fleming’s nose and a dysentery-causing strain from a World War One soldier. A DNA double helix is seen in an undated artist’s illustration released by the National Human
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