The Broad Institute's Alina Chan believes it could have. The remarkable stability of the virus, whose genome had barely changed from the earliest human cases, despite trillions of replications perplexed her. It appeared to be already adapted for human transmission when it first appeared. Other viruses typically evolve rapidly when they first infect people, changing to adapt to human physiology.
The US Food and Drug Administration hasn't regulated the 10,000 chemicals added to your food, according to a petition filed Wednesday by groups representing pediatricians, the environment, public health, as well as food and consumer safety advocates.
Chemours Co.'s board and senior management were sued by a pension fund in Delaware Chancery Court on Wednesday over billions in potential environmental liabilities related to PFAS that the company took on when it spun off from DuPont.
Fires in California, Oregon and Washington have torn through idyllic mountain towns, reduced neighborhoods to ash and spewed so much smoke that pilots were unable to pursue aerial attacks that can be critical in preventing such mass wildfires from encroaching on communities.