How zoos in the hottest parts of the country keep animals healthy during extreme heat

Extreme heat heading to heartland, as last three weeks mark hottest ever recorded on Earth
July 4th marked the hottest day ever recorded, as intense heat continues across U.S.
55 million Americans under heat alerts as hottest weather of the season spreads east
Blistering heat continues across parts of the U.S.
Blistering heat continues across parts of the U.S.
Heat waves and hazardous air quality continues across parts of US
Severe storms in parts of the country
Extreme heat threatens Florida's reef, continental US's only coral reef system | Nightline
Robot mimics human reactions to extreme heat | GMA
Pennsylvania flooding turns deadly, while extreme heat grips West and south l GMA

Severe storms in parts of the country
Country star Tanner Adell brings 'glam country' into the mainstream
Back to school: ABC News Live shares tips on preparing your kids for a healthy year | ABCNL
Harvard morgue manager accused of selling body parts
55 million Americans under heat alerts as hottest weather of the season spreads east
Heat continues in part of the country as the South braces for storms | ABCNL
Activist Freya Aspinall on the importance of returning animals to the wild
Harvard morgue manager accused of selling body parts
Blistering heat continues across parts of the U.S.
Pennsylvania flooding turns deadly, while extreme heat grips West and south l GMA