Have you ever seen a plant lose most of its leaves during the summer heat or a tree fails to emerge from winter dormancy?

Have you been paying attention to current events recently? See how many of these 10 questions you can get right. Compiled by Jeremy Engle Meta, the company that owns Facebook and Instagram ...

Introduction Globally, overweight and obesity were estimated to cause 3.4 million deaths, 3.9% of years of life lost and 3.8% of disability-adjusted life years in 2010. Despite the fact that obesity ...