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Neanderthals and humans likely mixed and mingled during a narrow time frame 45,000 years ago, scientists reported Thursday. Researchers analyzed ancient genes to pinpoint the time...
Researchers have discovered that humans age at the molecular level in two faster bursts, one around age 44 and the other at age 60. Scientists from...
Scientists in the United States have detected the most elevated amounts of planet-warming carbon dioxide in Earth’s atmosphere since records started. The Mauna Loa Observatory in...