The record heatwave roiling parts of Texas, Louisiana and Mexico was made at least five times more likely due to human-caused climate change, scientists have found, marking the latest in a series of recent extreme “heat dome” events that have scorched various parts of the world.
A stubborn ridge of high pressure has settled over Mexico and a broad swath of the southern US over the past three weeks, pushing the heat index, a combination of temperature and humidity, to above 48C (120F) in some places.
