Thanksgiving is upon us, as families and friends gather for food, drink and conversation. The latter can be fraught with risk, of course — politics and religion have long been out of the question, and ...

A new theory of the origin of birds, traditionally believed to be driven by the evolution of flight, is now being credited to the emergence of enlarged skeletal muscles in birds. Their upright ...

So, you’re not a morning person, right? With busy schedules and erratic sleep patterns, many people have trouble finding time to exercise. But the benefits are so tremendous, it may be time to double ...