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How did a letter written in the mid-1600s help to create the concept of mathematical probability? What kind of impact did this realization have on the world? How is the concept of probability being

Is there water on Mars? A group of local scientists have found compelling evidence that liquid water exists on the planet. If water does exist on Mars, does it mean that life exists on the red planet?

As submersible robots made another risky attempt to control the underwater Gulf oil gusher, the crude on the surface spread, closing in on Florida. BP's stock plummeted and took much of the market down with it, and the federal government announced criminal and civil investigations into the spill.

Most adults remember taking a test or two in grade school. But few would recall taking upwards of 16 tests in a single year. That's the reality some school kids face in the San Diego Unified School Di

Implementation of a California state law to protect fragile marine areas has reached the waters off San Diego. Studies have shown the reserves help build up fish populations. KPBS Environmental Report

The Kansas Board of Education again has adopted science standards that take aim at evolution. Supporters say it's about bringing academic integrity to the science classroom. Critics call it an attempt to inject religion into science education.

As Democrats hunt for a single Republican vote needed for a filibuster-proof majority on financial regulation legislation, Tennessee Sen. Robert Corker remains near the top of their list. Corker has shown a willingness to negotiate, and analysts say he's unlikely to face the wrath of voters back home if he supports the bill.

In the near future, the eastern edge of downtown San Diego might be transformed with a brand new Chargers stadium. The City of San Diego has already built one stadium downtown and is considering building another. But has PETCO Park been a good investment?

Carbon dioxide usually gets most of the blame for global warming, but a dramatic increase in methane gas emissions is worrying scientists. Global warming is causing the world's wetlands to produce more methane gas — which in turn is causing more global warming.

Following the massive earthquake that struck on Feb. 27, scientists have flocked to Chile with the goal of picking up enough clues to one day predict when the next big one will strike.