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Enceladus Might Be Methane Hotspot

NASA’s Cassini spacecraft spotted a surprising amount of methane erupting from Saturn’s moon Enceladus, suggesting it harbors more methane than we thought. Clara Moskowitz reports...

See Movement Better by Bicarb

Bicarbonate, the chemical that transports CO2 through the blood, increases the "refresh rate" of rod cells in lab tests--which could mean better motion detection. Christopher Intagliata reports...

Malaria Parasite Attracts Mosquitoes with Perfume

The Plasmodium parasite uses an altered type of plant chloroplast to manufacture pine-and-lemon-scented chemicals, which lure in the bloodsuckers. Christopher Intagliata reports...

Teotihuacan's Social Tensions Contributed to Its Fall

The decline and abandonment of the Mexican metropolis may have been hastened by infighting among different cultural and socioeconomic groups. Cynthia Graber reports...

Humans and the Amazon: A 13,000-Year Coexistence

University of Exeter archaeologist José Iriarte talks to freelance journalist Cynthia Graber about his efforts to understand human activity in and influence on the Amazon region for the last 13 millennia ...

Music’s Physiological Effects Transcend Culture

People in the Congo rainforests or in Montreal tended to react to the same piece of music in strikingly similar ways. Andrea Alfano reports...

That's What Ya Call a 4-Star Planet

Astronomers report the discovery of only the second quadruple-star system known to host at least one planet. But they suspect there are a lot more such systems out there. Lee Billings reports...

La Nina Conditions Spin Up More Springtime Twisters

Severe weather forecasters could incorporate El Niño and La Niña cycling to make springtime tornado and hail forecasts. Christopher Intagliata reports...

Smoke Makes Twisters More Likely to Strike

Smoke wafting north from the Gulf of Mexico worsened the already stormy weather brewing across the southeastern U.S. on April 27, 2011. Julia Rosen reports...

Human Remains Double Known Rainforest Occupation Time

Physical remains in Sri Lanka show that people lived in rainforests 20,000 years ago, at least 10,000 years earlier than previous evidence showed. Cynthia Graber reports...