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Analysis of tweets from 2.4 million people in 84 countries confirms moods rise and fall according to pattern

They say all roads lead to Rome. Unfortunately that ain’t all that roads lead to. A new study shows that roads can promote the spread of antibiotic-resistant bacteria.

The death toll from listeriosis infections linked to contaminated cantaloupes is expected to rise in the coming weeks, the Centers for Disease Control and Prevention (CDC) announced today. So far, the outbreak has sickened 72 people and killed at least 13, the CDC said.

The idea of drugs tunneling their way through the brain, worms to the mind’s apple, is a frequent metaphor I hear. I wrote on the topic for Discovery’s Curiosity and resurfaced it to prepare material for drug education talks with high schoolers.

As the climate shifts, many species will migrate to more favorable destinations, altering their natural range. However, researchers have found that the journey itself may be perilous and the path to a new habitat could fall apart, meaning some organisms may not make the transition to a new home. Scientists at Brown University studied 15 amphibian species in the Pacific Northwest, including the black-bellied slender salamander, the Santa Lucia Mountains slender salamander, the California red-legged frog and the California newt

An industrial add-on to geothermal power plants near the Salton Sea in California could one day produce the lithium that is required for electric car batteries . Already, Simbol Materials , the company behind the process, has begun purifying lithium from conventional mining operations in Argentina, Chile and elsewhere for the global battery market at a demonstration facility in Brawley, Calif.

Facebook "Project Spartan" To Launch Next Week? A leaked Facebook mobile developers page has revealed the insides of a new mobile Facebook app, that TechCrunch identifies and confirms to be the rumored Project Spartan, Facebook's web-based HTML5 mobile app.

The top U.S. particle collider, now eclipsed by a more powerful European machine, will be switched off September 30 [More]

Editor's note: This article was originally published in the July 1994 issue of Scientific American and describes the first tentative sighting of the top quark.

STRASBOURG, France (Reuters) - EU lawmakers recommended on Thursday including a call for global targets on renewable energy and energy efficiency in the European Union's negotiating position for next year's Rio+20 sustainability summit in June. "We should aim at globally binding targets," said Karl-Heinz Florenz, a member of the European Parliament who helped draft the resolution. [More]

Editor's note: This article was originally published in the September 1997 issue of Scientific American (a PDF version of the original is available for purchase below). We have resurfaced this article to commemorate the end of the Tevatron

Cosmopolitan magazine’s Kate White moderates a relationship quiz between TODAY’s Hoda Kotb and guest cohost Nick Lachey. (TODAY)

AMSTERDAM (Reuters) - Europe's first exchange for trading wood pellets, used to replace coal in electricity generation, will be launched on November 3 in the port of Rotterdam, Anglo-Dutch exchange APX Endex said in a statement. The global market of wood pellets is growing as a result of world-wide policies to cut CO2 emissions and replace fossil fuels with renewable sources of energy.

Dr. Holly Phillips talks to Erica Hill and Chris Wragge about how prehypertension - blood pressure that is slightly higher than normal - can increase the risk of strokes.

Online dating scams may have hit more than 200,000 people in the United Kingdom and go largely unreported, according to a study released on Wednesday.