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Through climate science, we learned to read entire worlds — and no one can take that achievement from us: We are greater for what we have built with this knowledge, says astrophysicist Adam Frank.

China and several regional neighbors are locked in a growing dispute over the status of islands throughout the South China Sea. Here's a guide to what's at stake.

It's easy to think that a shaking hand could be a sign of Parkinson's disease. But it's more likely essential tremor, an ailment that's not life-threatening but can become debilitating.

Pilots and flight attendants in some countries are classified as "radiation workers" because of their extra exposure to cosmic rays. Scientists say these frequent fliers may face greater risks.

When Blue Shield of California stopped selling individual health policies in many zip codes in 2014, even insurance agents were surprised. Blue Shield says it dropped out to keep premiums low.

Vice President Biden says it appears that the Malaysia Airlines jet with nearly 300 people aboard was "blown out of the sky" over eastern Ukraine.

Malaria parasites in Myanmar are learning how to fend off the incredibly effective drug called artemisinin. That could cause a lot of problems there — and beyond.

After a horrendous October rollout, the ACA is viewed a little more favorably now. But the number of people who intensely oppose the law is 12 percentage points higher than those who strongly back it.

We have different clocks in virtually every organ of our bodies. But living against the clock — eating late at night or working overnight — may set the stage for weight gain and chronic disease.

We hear a lot about the brains of learners. A new book explores the brain processes involved in teaching.