Small asteroid to pass within Earth-Moon system Tuesday

(PhysOrg.com) -- A small asteroid will fly past Earth early Tuesday within the Earth-moon system. The asteroid, 2010 TD54, will have its closest approach to Earth's surface at an altitude of about 45,000 kilometers (27,960 ...

Population trends: Another influence on climate change

Changes in population growth and composition, including aging and urbanization, could significantly affect global emissions of carbon dioxide over the next 40 years, according to a new study out next week.

New iPhone app helps keep pets trim

Tipping the scales at 97 pounds, Sam was a chubby black Labrador retriever. Partial to meat, potatoes and the occasional mouthful of popcorn, he was a fine dinner companion and not very old when walking became difficult because ...

DNA and the 'magic rings' trick

(PhysOrg.com) -- A new study from UC Davis shows how, like a conjuring trick with interlocking rings, two interlocked pieces of DNA are separated after DNA is copied or repaired. The finding was published online Oct. 10 in ...

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