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News
Tiny sounds can make fluid waves larger in the sleeping brain
2+ day, 10+ 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....
Scientists identify brain cells that control how badly the body needs sleep
4+ day, 17+ hour ago (1126+ words) Two groups of brainstem cells build sleep drive in mice, and damping them cut sleep by nearly 70% without the usual damage. Push through a long enough day and the urge to sleep stops being a choice. That pressure builds the…...
Some organs may age much faster than the rest of your body
2+ week, 5+ day ago (1038+ words) AI found that organs can age at very different speeds, and researcher André Rendeiro told Earth.com that the results show how disease may ripple through the body. People count age in birthdays – one number for the whole body. A…...
Some of the most aggressive cancer cells steal from their own DNA to cheat death
2+ week, 5+ day ago (905+ words) Scientists found centromere DNA sitting at telomeres in ALT cancers, a merger of chromosome regions once thought impossible.` Every human chromosome is built on the same floor plan. Telomeres cap the two ends and keep the genetic material from fraying....
Scientists find an ‘immortal’ parent cell that continuously breeds disease-fighting macrophages without ever aging
2+ week, 5+ day ago (951+ words) Defying long-held biological rules, an immature "starter" immune cell managed to stay young and divide indefinitely for months while continuously generating fully grown, disease-fighting cells. Scientists grew an early-stage immune cell in a lab dish that refused to grow up....
Depression appears to shut down the brain’s ability to make new neurons
2+ week, 6+ day ago (1070+ words) A rare look inside the human hippocampus reveals changes in new neuron growth, memory circuits, stress responses, and inflammation linked to depression. Depression can affect how people feel, think, sleep, remember things, and deal with stress, so it does not…...
One of medicine’s rarest tumors appeared in saber-toothed cat spines
3+ week, 1+ day ago (1149+ words) Fossils from the La Brea Tar Pits suggest some saber-toothed cats suffered from painful spinal growths that may have made hunting difficult. The La Brea tar pits were the ultimate predator trap: a plant-eater would blunder into the asphalt, cry…...
Vivid dreams may drain the brain’s energy during sleep
3+ week, 3+ day ago (955+ words) During REM sleep, blood flow increases while energy inside neurons drops, revealing a surprising paradox linked to vivid dreams. Some mornings you wake from a vivid dream more tired than when you fell asleep. Sleep is supposed to leave you…...