Humans may not have the heart for space travel to Mars
Male rats exposed to simulated cosmic radiation had roughly twice as much collagen around heart blood vessels at…
Scientists resurrect a 160-million-year-old mammal immune system and watch it evolve
Researchers reconstructed antimicrobial peptides from mammal ancestors dating back about 160 million years and found that some ancient…
New ‘Google-like’ search engine can scan millions of cells for hidden RNA clues in seconds
Malva can search RNA sequences across millions of individual cells in seconds without requiring researchers to download enormous…
Newer blood thinners linked to slower Alzheimer’s decline
Newer blood thinners were linked to slightly slower memory and thinking decline in people with both Alzheimer’s disease…
Human brain cells may be far more powerful computers than scientists thought
For years, one of the simplest explanations for human intelligence was also one of the biggest: the human…
Great apes show mental differences that do not follow human rules
Ape minds have long been treated as clues to humanity’s past. Compare a chimpanzee, bonobo, gorilla, or orangutan…
‘Gym bros’ may have been right all along — should we all be eating more protein?
The usual public health message on exercise and diet is simple: do enough to avoid trouble. Walk more.…
Scientists say they may be closer than ever to reversing aging
In old age, the liver’s DNA packaging starts to come undone. That breakdown does not change the genetic…
Researchers find no significant joint damage in astronauts after short spaceflights
Eighteen days in orbit did not appear to leave a measurable mark on the hips, knees, or ankles…
Harvard researchers discover how the human nose decodes smells
For decades, smell stood apart from the other senses. Scientists could point to orderly maps in the eye,…
Chatbots outperform doctors in diagnosing many diseases, study finds
Some medical decisions do not come with a single clean answer. A doctor may know what disease a…
You don’t need exhausting workouts to build strength and health, study finds
If you think better workouts must leave you drained, sore, or barely able to walk the next day,…