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Conceptual artist Brian Goeltzenleuchter creates a special scent for Oceanside Museum of Art.

The U.N. is supposed to start deploying its biggest peacekeeping operation in a couple of weeks to protect millions displaced by war in Darfur, Sudan. But U.N. planners are still short of helicopters and some key units. Activists are growing frustrated with the shortcomings of the international response.

Can You Pass The Test?

AIDS is the number one killer in sub-Saharan Africa, and it's the fourth leading cause of death worldwide. Researchers have been trying to develop a vaccine to protect people against HIV, the virus that causes AIDS. So far, the results have been disappointing. From the International Aids Conference in Capetown, South Africa, KPBS Health Reporter Kenny Goldberg tells us the search continues.

Mayor Sanders said Governor Schwarzenegger will return to Qualcomm stadium tonight to make sure San Diego residents have everything they need. Sanders said his office will coordinate with the state to

This week, San Diego State University was one of five sites around the nation testing new emergency response technologies. The exercises demonstrated tools developed for the military that are now available for civilian first responders. A lot of money is being invested in powerful new surveillance tools, but are these making us any safer?

The culture clash in Afghanistan between modernizers and traditionalists, and between urban and rural society, has been a constant source of tension.

Tunisian and Egyptian political activists used Facebook and Twitter to organize protests and publicize breaking news. Harvard's Jillian York discusses the use of social media platforms for digital activism, and cases in which governments have blocked the services or compromised user privacy.

Researchers at MIT have developed a laptop computer they say will cost $100 and could be used by millions of children in developing countries. Some critics, including Microsoft's chairman Bill Gates, say it's the wrong approach.

A disclosure before proceeding: I am an omnivore, preferring my animal flesh charred over an open flame though I seldom eat red meat since a little round of prostate cancer and radiation a few years back. I also believe responsible research using animals has probably saved my life and the lives of many other humans, and I have no objection to that.