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Female tears had physiological effects on men who smelled them: It lowered their sexual arousal and decreased testosterone levels, according to a new study. Though study participants didn't notice a particular smell, researchers say there must be a chemical in the tears causing the effects.

Airs Wed., April 30, 2014 at 9 p.m. & Sun., May 4 at 3 p.m. on KPBS TV

North Koreans danced in the streets of their capital Wednesday after the Pyongyang regime successfully fired a long-range rocket, defying international warnings and taking a big step forward in its quest to develop a nuclear-tipped missile.

Russian antivirus firm Kaspersky Lab has discovered a piece of malware infecting computers mostly in the Middle East. Flame eavesdrops on conversations, takes screenshots and steals data from infected computers without being detected. Wired's Kim Zetter discusses how the malicious code works.

We'll discuss a new traveling exhibit, RACE Are We So Different?, which opens this weekend at the San Diego Museum of Man.

U.S.-China relations have deteriorated in recent years, amid growing concerns about cybersecurity and human rights. As part of TOTN's "Looking Ahead" series, The Economist's China editor Rob Gifford talks about the future relations between the world's two biggest economies.

The Costs of Military Involvement in Libya

Two Mexican Sci-Fi films Open

Stream now with KPBS Passport on KPBS+ / Watch Wednesday, Nov. 26, 2025 at 8 p.m. on KPBS TV + Thursday, Nov. 27 at 7 p.m. + Sunday, Nov. 30 at 8 p.m. on KPBS 2. Deep in the wilds of Florida, writer and naturalist Joe Hutto was given the rare opportunity to raise wild turkeys from chicks. Eventually, he had to let his children grow up and go off on their own, but this was harder than he ever imagined.

In an exclusive interview with our media partner inewsource, mayoral candidate Nathan Fletcher talked about a “living hell” with his biological father. Fletcher says he made the revelations hoping to set the record straight after questions about his past began surfacing in the campaign.