Le Journal

Long-buried traces of Denisovan DNA have resurfaced in modern human genomes — and they may still be working for us today. Scientists discovered a gene variant passed down from these extinct human relatives that likely helped our ancestors survive as they spread into the Americas. Ancient Interbreeding Gave Humans Helpful Genetic Tools A new study [...]

Using the world’s most powerful X-ray laser, scientists have filmed atoms performing an eternal quantum dance that never stops — even at absolute zero. This first-ever direct view of zero-point motion reveals that molecules vibrate in beautifully ordered, synchronized patterns instead of random motion. Most people struggle to make sense of the quantum realm: According [...]

Researchers analyzing data from 25 studies have found that people with anxiety disorders consistently show lower levels of choline, an essential nutrient involved in brain signaling and emotional regulation. Research from UC Davis Health shows that people with anxiety disorders have noticeably lower amounts of choline in their brains. Choline is an essential nutrient involved [...]

Cosmic dust trapped, or blocked, by Arctic ice allowed researchers to map 30,000 years of sea-ice history. Their findings show strong connections between melting ice, nutrient cycling, and future changes to the Arctic food web. Arctic sea ice has dropped by more than 42% since 1979, when satellite observations first became consistent enough to track [...]