A rare parasite has sickened at least 315 people across 14 states, health officials said. The culprit is cyclospora, a food-borne bug that causes wicked diarrhea. People typically catch the parasite from contaminated produce, but the source of this outbreak is still unknown.
Over drinks in the light of a full moon, a group of Swiss sleep researchers recently realized they could put a bit of folklore about the moon's disruptive effect on sleep to the test. The answer surprised them, and didn't quite win over some other scientists in the field.
Dr. Roger Nasci, a mosquito expert at the Centers for Disease Control and Prevention, says you don't necessarily need repellent with a high percentage of DEET to keep the 'skeeters away. Repellant still works well in low doses, and so far mosquitoes aren't growing resistant to it.
Since the 1930s, Louisiana has steadily been losing land that protects the city from hurricanes and other disasters. So the government group charged with shielding New Orleans from flooding sued about 100 oil and gas companies on Wednesday for their role in damaging coastal wetlands.
Biologists have discovered they can track hard-to-see species in streams, ponds and even the ocean by sampling the water for DNA. Scientists say the technique is an important conservation tool: So far, it's been used to track declining giant salamanders and even locate a rare whale.
On July 19, a spacecraft nearly 900 million miles from Earth took a color picture of our planet. NASA's Cassini spacecraft snapped the picture from orbit around Saturn. Now scientists have finished processing the picture. It shows a small blue dot next to the giant ringer planet.
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