Today on Post Reports, the 104-degree day that came years too soon in Britain. Plus, why President Biden is contemplating declaring a climate emergency in the U.S.  Read more:London correspondent Karla Adam takes us to a non-air-conditioned housing bloc in London on the hottest day ever recorded in Britain. One tenant tells her he’s unplugged the fridge because he’s scared it’ll catch fire. Plus, London bureau chief William Booth explains why Britain's heat wave is just the beginning of dangerously high temperatures.In the United States, President Biden has a goal to halve emissions by 2030. But since talks with Sen. Joe Manchin (D-W.Va.) stalled, Biden is considering taking executive action to bypass Congress. Tony Romm covers congressional economic policy, and he takes us through the rocky road ahead for the White House’s environmental agenda.