News
- Archaeology
Neandertals used rhinoceros teeth as tools
Finds at sites in Spain and France suggest that Neandertals used the teeth of ancient rhinos for heavy-duty fabrication.
- Space
Space junk falls back to Earth faster as sunspot numbers climb
A new study links the sun's 11-year cycle to accelerated orbital loss, with debris falling faster once sunspot numbers near their cycle peak.
- Animals
Singing mice puff up air sacs to make their sweet songs
To serenade with their high-pitched songs, singing mice inflate a throat sac — a use for air sacs seemingly unknown in any other animal.
- Health & Medicine
What to know about a rare hantavirus outbreak at sea
Public health officials are racing to find out how the sometimes deadly hantavirus got aboard a cruise ship and if there has been human-to-human spread.
