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News
This ‘living dinosaur’ survives up to 427 years and rank among the world’s longest-lived vertebrates
1+ hour, 33+ min ago (913+ words) New research suggests lake sturgeon may live for centuries, reshaping conservation plans for one of the Great Lakes’ rarest fish. Some of the lake sturgeon swimming in the Great Lakes may have been there before the United States existed. That…...
Tears and breast milk contain an ancient weapon against bacteria
1+ hour, 31+ min ago (1023+ words) Researchers reconstructed ancient versions of a bacteria-killing protein found in tears and breast milk, and some were more powerful than the human version. Tears, saliva and breast milk all carry a protein that holds iron away from bacteria, which need…...
Bats live remarkably long lives, and their genes reveal why
3+ hour, 14+ min ago (1076+ words) The genes behind bat lifespan overlap with the genes that handle viruses, and one key immune gene comes in up to three copies. A bigger mammal usually lives longer, and bats are a striking exception. Among the mouse-eared bats, body…...
El Niño is stronger now than at any point in the last thousand years
18+ hour, 32+ 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…...
Brain cells that protect nerve fibers can turn harmful with age
16+ hour, 22+ 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…...
Heart cells can ‘remember’ stress and use it for protection during chemotherapy
19+ hour, 3+ 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,…...
Lakes buried carbon steadily for 11,000 years, but then something changed
22+ hour, 20+ 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…...
Bizarre squid relative found in Wyoming is unlike anything seen before
1+ day, 1+ hour 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…...
Confidence shapes how the brain explains success and failure
1+ week, 2+ 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…...
Mercury may have shrunk by seven miles since it formed
1+ day, 7+ hour 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…...