published Nov 9, 2017, 6:01:00 PM, by Thomas Biesheuvel (Bloomberg) —Just five years ago it would have been almost unthinkable that one of the world’s biggest mining companies would not dig any coal. It’s now likely to become a reality. Rio Tinto Group, the world’s second-largest miner, has been steadily

By J. Lang Wood The search for the reasons behind obesity and the most effective methods for losing weight led to the discovery of the leptin hormone in 1994. This hormone is responsible for transmitting messages to the brain about how much energy to use depending on available energy reserves.