Trees are an Immediate, Cost-Effective Solution to Battling Rising Temperatures Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Volunteers help in planting tree seedlings as part of a reforestation program in Mexico City, Saturday, July 13, 2019. ( AP Photo/Ginnette Riquelme ) Produced by GBH, PRX and WNYC Studios