Researchers have found that beetles naturally lubricate their knees with a strange substance that prevents them from wearing away. Scientists found that this lubricant works better than even Teflon. They foresee that this wax-like material…

Most of the earth’s surface is covered by water. But, of all the water on Earth, just 3% is fresh water. According to the World Health Organization (WHO), about 785 million people around the world…