Humans

Environment

‘Nonstick’ chemicals may undercut value of vaccinations

Chemicals used to make fabrics stain resistant and pans stick resistant are showing up everywhere — including in kids. One big downside: New data show they can keep vaccines from working well.

Genetics

Genes tell old story

Ancient cells hold evidence of a massive die-off of Native Americans.

Health & Medicine

Packing Fat Addtional Information

Health & Medicine

Food for Life Additional Information

Microbes

Surprisingly hardy flu germs

Flu-causing viruses may live for days or even months outside the body.

Humans

Digging into the Maya mystery

In a Central American jungle, archaeologists and volunteers uncover ruins of the once-powerful civilization.

Humans

Mummies share their secrets

Cutting-edge technology such as CT, or CAT, scans and endoscopes are allowing scientists to see not just what’s underneath the wrappings but also what’s inside a mummy’s body.

Humans

Old bones ignite fresh debate

Scientists try to understand how 2 million-year-old fossils fit among ancient species.

Animals

An elephant’s “aha!” moment

A young elephant named Kandula passes a tricky test.

Health & Medicine

Worms, your unlikely allies

Parasites show promise in treating immune disorders.

Health & Medicine

A viral sniff

A common virus may get to the brain through the nose.

Health & Medicine

Blood does a body good

Studies of the superfluid aid in the prevention and treatment of diseases.