BOMBING OF HIROSHIMA AND NAGASAKI

On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world’s first deployed atomic bomb over the Japanese city of Hiroshima. The explosion wiped out 90 percent of the city and immediately killed 80,000 people;...

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Earthquake Safety Tips

Earthquakes are a common occurrence, rumbling below Earth's surface thousands of times every day. But major earthquakes are less common. Here are some things to do to prepare for an earthquake and what to do once the ground starts shaking. Safety...

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Cosmic threesomes make some galaxies run away

Galactic runaways called compact ellipticals may have been booted out of their homes by a stellar intruder. These small, dense galaxies are normally found cozied up to massive host galaxies that cannibalize their petite neighbors over billions...

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Science: Woolly mammoth DNA shows toll of low diversity

Even before woolly mammoths (Mammuthus primigenius) went extinct, signs of decline were written in their DNA, researchers report in the May 18 Current Biology. The team sequenced genomes from a 44,800-year-old specimen from Siberia and a 4,300-year old specimen from Wrangel Island in Alaska, where the last known population of woolly...

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