Marvin Cox, community outreach director with the Metropolitan Action Commission on June 25, in Nashville. As temperatures reached into the upper 90s, the Metro Action Commission was offering free window AC units to seniors, families with young children and people with medical conditions. Mark Humphrey/AP hide caption
Hurricane Ian passes over western Cuba in 2022, as captured by a U.S. weather satellite. Climate change is causing more extreme weather, and creates new challenges for weather forecasters. AP/NOAA hide caption
Jackye Lafon, who's in her 80s, cools herself with a water spray at her home in Toulouse, France during a heat wave in 2022. Older people face higher heat risk than those who are younger. Climate change is making heat risk even greater. Fred Scheiber/AFP via Getty Images hide caption
Taylor Swift fans wait for the doors of Nilton Santos Olympic stadium to open for her Eras Tour concert amid a heat wave in Rio de Janeiro, Brazil, Saturday, Nov. 18, 2023. A 23-year-old Taylor Swift fan died Friday night after suffering from cardiac arrest due to heat at the concert, according to a statement from the show's organizers in Brazil. Silvia Izquierdo/AP hide caption
Braxton Hicks, 7, of Livingston, Texas, holds his face to a portable fan to cool off during a Little League tournament in Ruston, La., last week. More very hot weather is expected this weekend in much of the central U.S. Gerald Herbert/AP hide caption
Dr. Rebecca Rogers practices primary care at the Cambridge Health Alliance in Somerville, Mass. During a recent appointment, she went over hydration tips with her patient Luciano Gomes, who works in construction. Martha Bebinger/WBUR hide caption
When patients arrive with heat stroke, medical teams quickly cover them from head to toe with bagged or even loose ice to lower their core temperatures back below 100 Fahrenheit, according to Dr. Jeffrey Elder, who leads emergency management at the New Orlean's largest hospital, University Medical Center. ER staffers also use misting fans on patients and administer IV fluids for rapid rehydration. Drew Hawkins/Gulf States Newsroom hide caption
Andres Matamoros wipes the sweat from his face while selling fresh fruit and cold coconuts from his roadside stand on June 28, 2023, in Houston. Nearly 400 daily maximum temperature records fell in the South in June and the first half of July, most of them in Texas. David J. Phillip/AP hide caption
Luna the French Bulldog dressed up for the National Independence Day Parade in Washington, DC, on July 4th. Stefani Reynolds/AFP via Getty Images hide caption
A girl refills her bottle with water from the "Fontana della Barcaccia" fountain in Rome in during the heat wave of July 2022. Andreas Solaro/AFP via Getty Images hide caption
A security guard wipes sweat from his brow in Beijing, on July 3, 2023. Record-breaking heat is unfolding around the world because of human-caused climate change and the cyclic climate pattern El Niño. Andy Wong/AP hide caption
Outdoor workers are vulnerable to prolonged heat waves like the one hitting Texas, which climate scientists warn are becoming more common. David J. Phillip/AP hide caption
Rescuers dig a spillway to release flood waters after heavy rainfall in China's northern Shanxi province in 2021. A new report finds that human-caused climate change made the floods about twice as likely. -/AFP via Getty Images hide caption
Hurricane Ian cause wide spread flooding when it dumped rain across Florida in September. A preliminary analysis found that Ian dumped at least 10% more rain because of climate change. Joe Burbank/Orlando Sentinal/Tribune News Service via Getty hide caption
Heat is common in places like Phoenix, so it can be difficult to warn the public when heat waves pose abnormally high danger. Ryan Kellman/NPR hide caption
Most people in the United States live in cities. And most people who live in urban areas primarily get outside by going to city parks. Climate change is putting pressure on people and parks alike. On a warm night in Washington, D.C. neighbors gather to put on their own July fireworks display. Ryan Kellman/NPR hide caption
Katherine Morgan wipes sweat from her forehead while walking to work during a record-breaking heat wave in Portland in 2021. Scientists say that heat wave would have been virtually impossible without human caused climate change. Nathan Howard/AP hide caption
Abilio Viegas attempts to fix his flooded van on South Street in Newark, New Jersey after flooding cause by the remnants of Hurricane Ida. Michael M. Santiago/Getty Images hide caption
A man shelters a baby from the sun with an umbrella during a heatwave in Burgos, northern Spain, Saturday, Aug. 14, 2021. Cities in Europe saw recording-setting heat this summer, with some regions reaching 117.3°F. Alvaro Barrientos/AP hide caption
Living California's Central Valley, Keishell Brown and other expecting moms contend with increasingly intense heat waves. Lauren Sommer/NPR hide caption
Flames from the Windy Fire burn up a giant tree this month in the Trail of 100 Giants grove in Sequoia National Forest in California. Children in younger generations will experience two to seven times more extreme climate events such as wildfires, a new study says. Noah Berger/AP hide caption
Climate change is increasingly becoming a public health threat, experts warn. Thousands were displaced and dozens died during Hurricane Ida. Luke Sharrett/Bloomberg via Getty Images hide caption
A pedestrian uses an umbrella to get some relief from the sun as they walk past a sign displaying the temperature on June 20, 2017 in Phoenix, Arizona. As 2020 comes to a close so does the hottest recorded decade. Ralph Freso/Getty Images hide caption
A Portland, Ore., resident wears a respirator to protect himself from wildfire smoke as he jogs in downtown in September 2020. Robyn Beck/AFP via Getty Images hide caption