kbooth2

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What Pangaea Would Look Like With Today's Political Boundaries [Infographic]

Goodbye, East Coast.<p>About 300 million years ago, the supercontinent of Pangaea started to break apart into the continents we live on today. An Italian designer who goes by the name Massimo put Pangaea back together, then added on modern political boundaries, creating the map you see here. Brazil …

NASA: Sun Getting Ready For A 'Field Flip'

Our nearest star is about to pull a once-in-11-years move by swapping its north and south magnetic poles.<p>The sun's polarity switch is a natural part of "solar max" — the period of peak activity during what averages out to be roughly an 11-year cycle. According to NASA, this year will mark the …

Dolphins Have Longest Memories in Animal Kingdom

Marine mammals can remember their friends after 20 years apart, study says.<p><b>Sorry, elephants: Dolphins have taken the top spot for best memory, at least for now.</b><p>New experiments show that bottlenose dolphins can remember whistles of other dolphins they'd lived with after 20 years of separation. Each …

FYI: Just How Old is Dirt?

Really, really old<p>"It depends on what you mean by dirt," says Milan Pavich, a research geologist with the U.S. Geological Survey.<p>"The oldest sedimentary rocks are about 3.9 billion years old—they're in Greenland—and at one time, they were dirt. That's pretty close to the time the Earth formed."<p>But …

Dolphins Know Other Dolphins By Name Even After Decades Apart

Even humans have trouble remembering the names of people they met 20 years ago. But not dolphins!<p>Last month, a study indicated that dolphins call each other by names, of a sort: they have a particular whistle unique to each dolphin, and when a dolphin hears its own whistle-name called, it responds. …