Human welfare

In this Monday, July 23, 2018 photo, heat ripples blur the downtown skyline as a jet lands in Phoenix, Ariz., as temperatures exceed 100 degrees in the morning hours. Already devilishly hot for being in the Sonoran desert, Arizona’s largest city is also an “urban heat island,” a phenomenon that pushes up temperatures in areas covered in heat-retaining asphalt and concrete. Phoenix officials say they are tackling urban warming, monitoring downtown temperatures, planting thousands of trees and capturing rainwater to cool off public spaces. (AP Photo/Matt York)

FILE - In this Monday, April 2, 2018, file photo, Donald Trump Jr., right, and Vanessa Trump, left, arrive to participate in the annual White House Easter Egg Roll on the South Lawn of the White House in Washington. Donald Trump Jr. and his estranged wife Vanessa are expected to appear Thursday, July 26, 2018, before a judge in New York City for a hearing in their divorce case. (AP Photo/Pablo Martinez Monsivais, File)

Russia's special presidential envoy to Syria Alexander Lavrentiev, second left, and Russian Deputy Foreign Minister Sergei Vershinin, left, meet with Lebanese Prime Minister-designate Saad Hariri, right, at his house in downtown Beirut, Lebanon, Thursday, July 26, 2018. The Russian delegation is in Lebanon to discuss Russian proposals for organizing the return of Syrian refugees from Lebanon and Syria to their homes in Syria. (AP Photo/Hassan Ammar)

FILE - In this Jan. 24, 2018, file photo, Larry Nassar sits during his sentencing hearing in Lansing, Mich. Lawyers for the imprisoned former sports doctor on Tuesday, July 24, 2018, filed motions in Ingham County asking that he be re-sentenced by a different judge in the first of the major molestation cases he faced. Nassar, who's serving a 60-year federal sentence for possessing child pornography, was also sentenced to up to 175 years in state prison for molesting young athletes. (AP Photo/Carlos Osorio, File)

FILE - In this May 7, 2018, file photo, first lady Melania Trump speaks on her initiatives during an event in the Rose Garden of the White House in Washington. Melania Trump will receive a briefing on neonatal abstinence syndrome when she visits a Tennessee children’s hospital on July 24. The first lady’s visit to Monroe Carell Jr. Children’s Hospital at Vanderbilt in Nashville, is tied to her “Be Best” initiative. (AP Photo/Andrew Harnik, File)

Police investigate a car at the scene of a shooting in Toronto, on Monday, July 23, 2018. Police were trying Monday to determine what prompted a man to go on a shooting rampage in a popular Toronto neighborhood on Sunday. (Christopher Katsarov/The Canadian Press via AP)