11+ hour, 9+ min ago   (1028+ words) Drilled cores from Galápagos coral carry an ocean temperature record back to the year 1000, and recent decades break the pattern. When the tropical Pacific warms every few years, the weather turns strange thousands of miles away. Direct measurements of that…...

8+ hour, 59+ min ago   (943+ words) A surplus of insulating brain cells, low on one protective protein, tracked the steepest cognitive decline in adults followed since childhood. After 70, memory and quick thinking slow down for most people, and the usual explanation is that the brain’s wiring…...

11+ hour, 40+ min ago   (1157+ words) Early stress in mitochondria before birth helped mouse hearts resist later chemotherapy damage by creating lasting protective changes. Chemotherapy can save lives, but some drugs can also put the heart under serious strain. Doxorubicin, a chemotherapy used against several cancers,…...

14+ hour, 57+ min ago   (1015+ words) Lakes across northern North America buried carbon at a steady rate for thousands of years, but that changed dramatically after 1850. Leaves, pollen and washed-in soil sink to the bottom of a lake and settle into mud, and the carbon in…...

18+ hour, 26+ min ago   (840+ words) A bizarre belemnite fossil from Wyoming has been identified as a new species, revealing the thickest known member of this ancient squid relative group. There’s a fossil in a Wyoming museum drawer that spent two decades being, essentially, a mystery…...

1+ week, 1+ day ago   (1184+ words) Confidence builds a sense of control, and two brain circuits turn that estimate into how much you learn from a win or a loss. When a job application disappears into silence, you have to decide whether the resume was weak…...

23+ hour, 53+ min ago   (934+ words) Scientists found that Mercury's roughest terrain may conceal ancient cliffs, suggesting the planet shrank substantially more than estimates showed. Mercury’s surface is crossed by long cliffs and ridges. They formed as the crust buckled to fit a planet that got…...

1+ day, 16+ hour ago   (1029+ words) A frozen object beyond Jupiter is venting carbon dioxide gas into space, revealing what can drive activity so far from the sun. A centaur, one of the icy bodies that orbit beyond Jupiter, has started venting gas into space, even…...

2+ day, 9+ hour ago   (1043+ words) Coral reefs are under growing heat stress, but a new field test suggests researchers may have another tool to help them cope. Coral probiotics have worked in tanks for years, where a researcher controls the water and decides when the…...

2+ day, 12+ hour ago   (1003+ words) Carefully timed sounds can make fluid waves larger in the sleeping brain, giving researchers a new way to study how brain activity and CSF flow are connected. Sleep is often treated as a time when the brain simply shuts down....