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With three wins on Super Tuesday, and a victory in the Kansas caucuses over the weekend, GOP hopeful Rick Santorum is on a high — and campaigning hard in the South.

Researchers writing in the current issue of Science believe they have found an error in existing biofuel laws that could actually make climate change worse. They say these rules inadvertently encourage deforestation, which in turn contributes to global warming.

The main character of Ian McEwan's Solar is a Nobel Prize-winning climate change scientist who visits the Arctic. McEwan was inspired by humanity's ability to corrode good intentions with pettiness.

Last May, German investigators found secret files embedded in a pornographic video on memory cards being carried by a suspected al Qaeda operative. Peter Wayner describes the history and technology of the technique for hiding information, known as steganography.

Colorado prosecutors on Monday charged a former neuroscience graduate student with 24 counts of murder and 116 counts of attempted murder in the shooting rampage at the midnight showing of the new Batman movie.

Now that The Book Works is leaving us, Pat Finn wonders about the fate of the independent bookstore and finds one that is doing okay, thank you.

KPBS Presents CHANGE: ELECTION 2008 An Envision San Diego Special Presentation SAN DIEGO –The political landscape of San Diego has shifted. For the first time in 24 years, there are more registered

Long before Obama gave a commencement speech to Air Force cadets Wednesday, his campaign was focusing attention on his record with military families and veterans — a key voting group that could make the difference in swing states like Virginia, North Carolina and Florida.

Pope Benedict XVI issues a “call to action” to deal with climate change.

How close are we to making robots that think and learn? Will more and more robots be cleaning our homes, providing companionship to our kids, and taking care of the elderly? As part of our monthly s