The image shows the sRosettas lander Philae is safely on the surface of Comet 67P/Churyumov-Gerasimenko on November 13, 2014.

The Rosetta orbiter's Philae lander has sent back a trove of data on the comet it's on.

  • The bone-dry capital of Western Australia has faced down many of the same water issues by enacting reforms to its water-management system that some California politicians seem to find intriguing.Environment,California,Desalination,drought,Environmental Issue,Perth,Water,Water desalination,Water supply,Western Australia,Erin Wright

  • The Affordable Care Act's enactment has improved coverage, care, and prescriptions. 

  • Recent research points to climate change as a factor in the disappearance of woolly mammoths.

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Group has come under fire for claims that climate change is not human-caused.

Exercisers in a gym class.

Chance of returning to a normal weight is only one in 210 for men and one in 124 for women over a year, they say.

Packets of Nurofen ibuprofen pain relief tablets, produced by Reckitt Benckiser Group Plc, sit displayed for sale inside a supermarket in London, U.K., on Tuesday, Feb. 11, 2014.

Taking both antidepressants and painkillers can raise risk for brain hemmorrhage.

Portrait of woman smoking.

Women who hadn't smoked for at least five years were 45% less likely to have severe or frequent hot flashes.