Climate change is more extensive and worse than once thought

  • FILE - In this Aug. 28, 2017, file photo, rescue boats float on a flooded street as people are evacuated from rising floodwaters brought on by Tropical Storm Harvey in Houston. Scientists say climate change is faster, more extensive and worse than they thought a quarter century ago. They’ve concluded climate change has caused more rain in hurricanes Harvey, Maria, Katrina and others. (AP Photo/David J. Phillip, File)

  • FILE - In this July 29, 2010 file photo, Moscow’s St. Basil’s cathedral, background, is seen through the smog covering Moscow during a heat wave. Scientists say climate change is faster, more extensive and worse than they thought a quarter century ago. Studies have shown climate change has worsened droughts, downpours and heat waves, such as the Russian one in 2010, that have killed thousands of people. (AP Photo/Misha Japaridze, File)

  • FILE - In this April 14, 2010 file photo, a shepherd walks with a herd of sheep as he crosses a dried water bed in the outskirts of Hyderabad, India. Studies have shown climate change has worsened droughts, downpours and heat waves that have killed thousands of people. (AP Photo/Mahesh Kumar A., File)

  • FLE - In this June 20, 2017 file photo, a local temperature sign reads 120-degrees Fahrenheit as temperatures climb to near-record highs in Phoenix. Scientists say climate change is faster, more extensive and worse than they thought a quarter century ago. (AP Photo/Ross D. Franklin, File)

WASHINGTON — Climate scientists missed a lot about a quarter century ago when they predicted how bad global warming would be.

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