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Study: Medical marijuana does not increase use among youth

The legalization of medical marijuana in Rhode Island in 2006 did not increase its use among teenagers, according to research presented at the American Public Health Association Annual Meeting and Exposition on Wednesday. The study was led by Rhode Island Hospital physician Esther Choo. The finding directly contradicts White House…

Asteroid set to barely miss Earth Tuesday

A massive asteroid will make a rare fly-by Tuesday, and although it poses no danger of crashing to Earth, US scientists said this week they are looking forward to getting a closer look. “This is not a potentially hazardous asteroid, just a good opportunity to study one,” said National Science…

Time for change? GMT could be history

Leading scientists from around the world are meeting from Thursday to consider a proposal that could eventually see Greenwich Mean Time relegated to a footnote in history. For more than 120 years GMT has been the international standard for timekeeping, but it is now under threat from a new definition…

NASA: Martians probably lived underground, if at all

According to a new study conducted by NASA, the presence of abundant water on the surface of Mars was short lived, meaning any lifeforms probably lived within the planet and not on it. In 2005, scientists discovered clay deposits on Mars’ surface that indicated the presence, at one point, of water…

Arabian cyclones intensified by S. Asian pollution: study

Airborne pollution from South Asia is helping to brew monster storms in the Arabian Sea that have claimed thousands of lives and cost billions of dollars, scientists said on Wednesday. In a paper published in the British journal Nature, researchers pointed the finger at a haze known as the Asian…

New webcam allows world to watch live polar bear migration

An estimated 1,000 polar bears linger outside the Canadian town of Churchill, Manitoba waiting for the Hudson Bay to freeze over around this time, every year. Tourists flock to the town to see them. But this year, cameras turned on the polar bears are also bringing a front row view…

South Africa hyenas recaptured after chewing to freedom

Two hyenas escaped from a South African wildlife park Wednesday by chewing through an electric fence during a power outage, but were recaptured within half an hour, the park said. “The power went off… and the hyenas — who will chew through wire and even iron bars — managed to…

Painkiller overdose ‘epidemic’ strikes U.S.

WASHINGTON — The United States is facing an epidemic of lethal overdoses from prescription painkillers, which have tripled in the past decade and now account for more deaths than heroin and cocaine combined. The quantity of painkillers on the market is so high that it would be enough for every…

Math grades improving for U.S. pupils, report finds

WASHINGTON — US youngsters are scoring better in mathematics, but progress in reading skills is mixed, a national yardstick of student achievement released Tuesday showed. In the fourth and eighth grades, the average math score in 2010 was one point higher than in the previous year, said the National Assessment…

UK company: Sing Beatles songs in shower ‘to save planet’

A British water company has urged customers to sing in the shower and recommends Beatles songs as they are short and so can help save water and cut energy bills. Thames Water says singing as you lather makes you feel better and provided the right songs are sung you use less water. It wants…

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