TODAY’s headlines: July Fourth heat warnings, Mexico names new president01:15
A dangerous heat wave scorches the country, bringing record temps and dangerous conditions to tens of millions of Americans. In other TODAY headlines, Andrés Manuel López Obrador wins Mexico's presidential election, his left-wing politics signaling a major change for the country. And rescue divers desperately advance in a flooded cave in Thailand where a dozen boys and their soccer coach have been trapped for more than a week. TODAY’s Savannah Guthrie and Willie Geist have these details and more.