The extreme heatwave in Mexico is not only affecting the environment, it's wreaking havoc on the howler monkeys and causing them to fall dead out of trees, the Associated Press reported. "They ...

Gilberto Pozo, a biologist, was monitoring a small forest in the town of Cunduacán, in southern Mexico, in early May when two mantled howler monkeys fell from a tree in front of him with a thud.

A heat wave in Mexico is so fierce that howler monkeys are dropping dead from trees. At least 85 of them have died in Tabasco state as temperatures soar to 113 degrees Fahrenheit and beyond.