Simone Biles at the Olympics, the prisoner swap between Russia and the US, Israeli bombardment in Gaza and wildfires in California: the last seven days as captured by the world’s leading photojournalists
Utah’s Great Salt Lake rings climate alarm bells over release of 4.1m tons of carbon dioxide
Study has found that the lake, which has lost 73% of its water, released climate-warming emissions
Warm Septembers lead Iceland to delay launch of autumn foods
Supermarket says unpredictable weather makes planning difficult but other grocers stick to schedule