Smoke chokes West Coast as wildfire deaths keep climbing

Wildfire smoke that posed a health hazard to millions choked the West Coast on Saturday as firefighters battled deadly blazes that obliterated some towns and displaced tens of thousands of people, the latest in a series of calamities this year.

Canada's last intact ice shelf collapses due to warming

Canada's 4,000-year-old Milne Ice Shelf on the northwestern edge of Ellesmere Island had been the country's last intact ice shelf until the end of July when ice analyst Adrienne White of the Canadian Ice Service noticed that satellite photos showed that about 43% of it had broken off.