Either environmental or sexual selective pressure began acting on hair after humans began dispersing out of Africa.
Neither banning nor recycling will rid us of Styrofoam. Can we live without it?
Federal funding for medical research has declined, leading academics to seek alternative funding sources, sometimes from drug companies.
For a brief period of time in the 19th century, doctors used "mesmerism" for pain-free surgery.
Temperatures and droughts have spiked at much higher rates in parks than elsewhere.