How seven cases of a mysterious opioid-induced disease revolutionized Parkinson's research

In the early 1980s, seven people took synthetic heroin. What happened next drastically changed our understanding of Parkinson's disease, and how to treat it

Having trouble sleeping? Look to the moon for answers

New research shows that our circadian rhythms are guided by the moon as well as the sun

Did humans ever hibernate to survive harsh winters?

Fossil evidence from Spain suggests early humans may have hibernated for up to four months at a time