Lice are tiny wingless insects that feed on human blood from the scalp. From wet combing to petroleum jelly, check out the ...

Once inside a human host, they can cause a variety ... and lack any distinctive features like a head or eyes. Unlike some ...

The human brain, the nervous system of a worm, and a computer chip have striking similarities, scientists from the U.S., the U.K., and Germany have discovered. The human brain, the nervous system ...