Dunes from Christmas trees

Residents of shorelines previously damaged by Hurricane Sandy turned to a cheap and plentiful resource to help them rebuild: discarded Christmas trees. The storm washed away miles of sand dunes, which protected the coast from flooding by serving as a buffer against wind and waves. Volunteers in New York and New Jersey piled thousands of the trees on top of […]

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Giant snails

Miami South Florida is battling a growing infestation of one of the world’s most destructive invasive species: the giant African land snail. At least 1,000 of the snails are being caught each week \ in Miami-Dade County, and a total of 117,000 of the mollusks have been caught since September 2011. They can grow as big as a rat and […]

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Twitter as a learning tool?

■    A Brazilian school is teaching kids proper English by asking them to correct erroneously worded tweets by their favorite celebrities. The school asks its preteen students to point out grammar and spelling errors to the likes of Justin Bieber, Paris Hilton, and Charlie Sheen. In April, Bieber tweeted, “That was a long bus ride. But we here.” Maria, 9, […]

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Mapping the infant universe

Mapping the infant universe

Mapping the infant universe is no easy task. New data from the European Space Agency’s Planck satellite is giving astronomers their most complete look yet at the very earliest moments of the universe. Planck, which measures microwave radiation, has created a heat map of the temperatures present in the universe a mere 370,000 years after the Big Bang. The data […]

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Turning walks into watts

The average human being generates about eight watts of energy with each step, most of which is expended as vibration. It may not sound like much, but take the 30,000 or more people who pass through a major-city subway hub at rush hour, and suddenly you’ve got serious power. That’s usually a problem for architects and engineers, who have to […]

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