Comet Leonard makes its closest approach to the sun today, one year after its discovery
Look up as the Quadrantid meteor shower puts on a show in the new year
The glue lice use to attach eggs to hair is exceptional at trapping & preserving anything it encases—including high-quality ancient human DNA from the lice’s hosts. Using hair encased in lice glue scientists were able to isolate human DNA from 1,500 to 2,000-year-old mummies in the Andes Mountains