Extreme heat hits U.S., Mexico, Central America—raising concerns for wildlife and hurricane season

This extreme heat is occurring in a world that is quickly warming due to greenhouse gases, which come from the burning of fossil fuels like oil, gas and coal.

Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people in sweltering temperatures, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees.