Cities are being urged to expand their urban tree canopy to mitigate the effects of climate change, but some are replacing mature shady trees with palms.
Los Angeles, Sacramento, San Diego and other California communities will get $103 million in federal funding for tree planting and other green space efforts.
An estimated 41 million people in major U.S. cities experience temperatures that are at least 8 degrees warmer than those felt by people living outside of the cities.