For decades, scientists thought that most of our genetic code was essentially useless filler between our genes. But the results of a massive project to understand this so-called junk DNA reveal that it contains switches that control how genes function.
Astronauts aboard the International Space Station took a spare toothbrush along on a spacewalk today and used it to help clean debris from around some bolts. What do you use them for? (Besides brushing your teeth, that is.)
Over the 20th century, America's "growing season," a proxy for warmer temperatures, has been getting longer. And scientists say the trend is exactly what they expect to see as greenhouse gases in the atmosphere increase.
Every Top 40 hit in 1965 was in a major key and had a fast tempo. In 2009, more than half of the Top 40 songs were in a minor key. Has there been a shift in the emotional content of music in the past five decades, and why are we drawn to sadness and ambiguity in music?
More than 20,000 high-temperature records have been broken so far this year in the United States. It's especially bad in urban areas, where cities are heating up about twice as fast as the rest of the planet. But a researcher in Atlanta is using the heat wave as an opportunity to do something about the warming planet.
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