News
- Humans
Underwater caves once hosted the Americas’ oldest known ochre mines
Now-submerged chambers in Mexico’s Yucatán Peninsula contain ancient evidence of extensive red ochre removal as early as 12,000 years ago.
- Life
Bizarre caecilians may be the only amphibians with venomous bites
Microscope and chemical analyses suggest that, like snakes, caecilians have glands near their teeth that secrete venom.
- Health & Medicine
4 reasons not to worry about that ‘new’ swine flu in the news
Researchers identified a pig influenza virus that shares features with one that sparked the 2009 pandemic — that doesn’t mean another one is imminent.
- Animals
A sparrow song remix took over North America with astonishing speed
A variation on the white-throated sparrow’s song spread 3,300 kilometers in just a few decades.
