AP

Millions of Americans are facing record heat with temperatures frequently over 90 degrees Fahrenheit. The heat often impacts people of color and low-income residents the most. Mortality records from cities across the country have shown that heat kills along socioeconomic and racial lines. Experts say planting more trees and creating green spaces can help. In Phoenix, efforts are underway to grow the tree canopy. In New York, laws are being passed to increase the tree cover over the next decade. And in Texas, the Houston transit authority is working to redesign bus stops to provide relief from the heat.