Chimps are strong, but not 5x stronger than humans. Learn why their muscles and nervous systems work differently, and what humans gained by evolving the way we did.
Doctors use a combination of cognitive tests, blood work, brain scans, and more to diagnose Alzheimer's. Here's what each test looks for and why it matters.
Most GISTs occur randomly, but some run in families. Learn what makes a GIST hereditary, which syndromes are involved, and what screening may look like.