| Comet could hit, radically change Mars in 2014 | | New observations confirm that a comet heading toward Mars could collide with it in October 2014, possibly ushering in radical environmental changes on the Red Planet, astronomy experts said. | | Scientists spot birth of giant planet | | Astronomers using a powerful telescope in southern Chile said they have captured the first direct image of a protoplanet forming around another star, still embedded in thick gas and dust. | | 83,000 toxic chemicals pose unknown threats | | Some 83,000 synthetic chemicals circulate freely in water, soil, air, wildlife, food and manufactured goods, posing unknown threats to human and environmental health, scientists warn. | | Seals take scientists to Antarctic’s ocean floor | | Elephant seals wearing head sensors and swimming deep beneath Antarctic ice have helped scientists better understand how the ocean’s coldest, deepest waters are formed, providing vital clues to understanding its role in the world’s climate. | | Six nuclear waste tanks leaking in US | | Six underground storage tanks at the Hanford Nuclear Reservation along the Columbia River in Washington state were recently found to be leaking radioactive waste, but there is no immediate risk to human health, state and federal officials said on Friday. | |
