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Bike, Car or Train: Which Commute Has the Worst Air Pollution?

Breathing in air pollution can irritate the lungs and aggravate asthma and cardiovascular disease. However, a recent study from the California Air Resources Board shows that how you get to work makes a big difference.

California Leaves Another Big Footprint at U.N. Climate Talks — But Does It Matter?

This veteran of multinational climate talks thinks it does. Here's why.

New Trials Aim to Stop Alzheimer's Before It Starts

If the trials are unsuccessful, it could mean the end of the line for the idea that amyloid plaque is the real cause of the disease. The latest from our Future of You blog.

Racing Rising Seas in the Bay Area: Design Teams 'Float' Some Big Ideas

illustration shows structures that could combine recreation with resilience to rising seas

The visions are lofty — and costly — and the design teams want your feedback.

Living on Space Station Takes Toll on Astronaut's Health

Scott Kelly takes a selfie during a spacewalk

A new documentary, 'Beyond A Year In Space,' chronicles what it's like for U.S. astronaut Scott Kelly to come back from his 340 days in space. Watch the full documentary here.

How Silicon Valley Industry Polluted the Sylvan California Dream

The earliest visions of Silicon Valley as a new hub of clean manufacturing represented a facet of the California dream — but the industry betrayed it, says history professor Jason Heppler.

Support of KQED Science is provided by the S. D. Bechtel, Jr. Foundation, the Dirk and Charlene Kabcenell Foundation, the Vadasz Family Foundation, the Gordon and Betty Moore Foundation, and the members of KQED.