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We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

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+ - Belize's 'Blue Hole' Reveals Clues to Maya's Demise

Submitted by Anonymous Coward
An anonymous reader writes "The collapse of the Mayan civilization has been a mystery for decades, but now new research suggests that the blue hole of Belize could provide an answer. Studying minerals from Belize's famous underwater cave, researchers have discovered that an extreme drought occurred between AD 800 and AD 900, which is when the Mayan civilization collapsed. From the article: "Although the findings aren't the first to tie a drought to the Mayan culture's demise, the new results strengthen the case that dry periods were indeed the culprit. That's because the data come from several spots in a region central to the Mayan heartland, said study co-author André Droxler, an Earth scientist at Rice University.""

+ - Neil DeGrasse Tyson Explains his Christmas Tweet.-> 1

Submitted by 140Mandak262Jamuna
140Mandak262Jamuna (970587) writes " Neil DeGrasse Tyson tweeted on christmas day what appeared to begin as a tribute to Infant Jesus, but ended up celebrating Isaac Newton who shares his birthday with Jesus, (with sufficient allowances for the estimate of Jesus' and the confusion between Gregorian and Julian calenders for Newton). Apparently this was retweeted some 77000 times, far above his average of 3.5K retweets. He doubled down on it by tweeting about people being offended by objective truths. Then wrote a fuller explanation. "
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+ - A smart electric bike: taking the Copenhagen Wheel out for a spin->

Submitted by mlamonica
mlamonica (3770375) writes "Bikes are a great way to get around the city. But what if it's just too hilly or far to commute by bike? That's where Superpedestrian wants to come in. With a license from MIT's Senseable City Lab, they're commercializing the Copenhagen Wheel, a bike wheel replacement that gives riders electric assist, and through 12 embedded sensors, lots of information on a smart phone app. I took the bike for a ride at the Cambridge office and offer this review."
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