Tina Hesman Saey's Articles
- Scientists have puzzled over what makes that loud sound when our knuckles “crack.” Bubbles appear to play a role, but not in popping.
- A new bird flu virus threatens to spread outside of China. Experts traced the germ to markets where live chickens are sold.
- Peppers can burn the tongue, but soothe sore tissues. Scientists have now sleuthed out how, and the answer shows a role for stretch sensors on cells.
- The common cold infects the nose. Scientists long have known the virus grows better there, but not why. Now, a study finds the body’s defenses simply don’t work as well under the nose’s slightly cooler temperatures.
- A record outbreak of the deadly disease has already claimed nearly 1,000 lives in West Africa. Scientists suspect bats or eating some other wild animals may have triggered the epidemic.
- Some snippets of DNA other than genes play a role in giving some people of European a golden crown of hair.
- All tribes seem to derive from the same Asian roots, DNA indicates.
- Polar animals are encountering new, killer parasites as melting ice unlocks their access to new hosts.
- Genes from an ancient skeleton suggest that dark-skinned people may have been the first to evolve blue eyes.
- A trio of scientists who studied how cells transport materials — think of buses moving kids to and from school — will share a 2013 Nobel Prize.