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Historians have long struggled to explain how the West became the preeminent political and economic force in the modern world. In Civilization, historian Niall Ferguson credits six "killer apps" and explains how China is quickly catching on — and catching up.

A recent study identified a significant presence of ultrafine particles in the air around an international port of entry in El Paso.

President Obama has yet to make known his choice to replace Secretary of State Hillary Clinton, but plenty of Republicans have made theirs: John Kerry.

Giving poor people health insurance, the belief was, would decrease their dependence on hospital emergency rooms by providing them access to more appropriate, lower-cost primary care.

It's been tough to identify the problems that only turn up after medicines are on the market. An experimental project is now combing through data to get earlier, more accurate warnings.

As expected, incumbent Congressman Scott Peters, a Democrat, and former San Diego Councilman Carl DeMaio, a Republican, are headed for a November showdown in the the 52nd Congressional District race.

Google teamed up with the USGS, NASA and TIME magazine to release a stunning cache of satellite images compiled over the past 28 years.

Airs Monday, August 12, 2013 at 11 p.m. on KPBS TV

After a two-year renovation, the Metropolitan Museum of Art's Costume Institute is reopening with an exhibit on the work of Charles James, who is now obscure, but considered America's first couturier.

Alzheimer's disease can be tough to diagnose, especially early on. Doctors can order brain scans and assay spinal fluids. But existing tests are imperfect and some can be invasive.