Millions of Americans are once again in the grips of dangerous heat. Hot air blanketed Europe last weekend, causing parts of France and Spain to feel the way it usually does in July or August. High temperatures scorched northern and central China even as heavy rains caused flooding in the country’s south. Some places in India began experiencing extraordinary heat in March, though the start of the monsoon rains has brought some relief.
It’s too soon to say whether climate change is directly to blame for causing severe heat waves in these four powerhouse economies — which also happen to be the top emitters of heat-trapping gases — at roughly the same time, just days into summer.