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They only recently evolved to their massive size.
The effort to relocate the animals was sponsored by African Parks, a conservation nonprofit that manages national parks on behalf of the government.
A public health education group recently looked at how five social media sites impacted users' anxiety, depression and body image.
Researchers don't think a frozen arctic will always be as stable or as safe as we thought it would be.
Researchers have long known that having one too many cocktails might be associated with an increased risk of breast cancer.
The EPA wants to clean up more hazardous sites but may have to go at it with fewer resources than expected.