Rising sea levels

Thousands of demonstrators attend a protest climate strike ralley of the 'Friday For Future Movement' in Leipzig, Germany, Friday, Nov. 29, 2019. Cities all over the world have strikes and demonstrations for the climate during this ClimateActionDay. (AP Photo/Jens Meyer)

FILE - In this Sept. 10, 2017 file photo, waves crash over a seawall at the mouth of the Miami River from Biscayne Bay, Fla., as Hurricane Irma passes by in Miami. In his first 10 months in office, Florida Gov. Ron DeSantis has appointed a science officer, established a czar on climate change and pushed action against red tide and algae blooms. (AP Photo/Wilfredo Lee)

FILE - In this Nov. 30, 2017 photo, boats are shown moored in the Anclote River near the old Stauffer chemical plant site in Tarpon Springs, Fla. Hundreds of the nation's most polluted places are at an increasing risk of spreading contamination beyond their borders by more frequent storms and rising seas. Sixty percent of U.S. Superfund sites are in danger from weather extremes like hurricanes or wildfires, and the Trump administration’s reluctance to acknowledge and plan for climate change is hurting chances of safeguarding them, according to a government watchdog. (AP Photo/Chris O'Meara, File)

FILE - In this Nov. 30, 2017 photo, boats are shown moored in the Anclote River near the old Stauffer chemical plant site in Tarpon Springs, Fla. Hundreds of the nation's most polluted places are at an increasing risk of spreading contamination beyond their borders by more frequent storms and rising seas. Sixty percent of U.S. Superfund sites are in danger from weather extremes like hurricanes or wildfires, and the Trump administration’s reluctance to acknowledge and plan for climate change is hurting chances of safeguarding them, according to a government watchdog. (AP Photo/Chris O'Meara, File)

A woman jumps over a puddle during cleaning following a flooding in Venice, Italy, Thursday, Nov. 14, 2019. The worst flooding in Venice in more than 50 years has prompted calls to better protect the historic city from rising sea levels as officials calculated hundreds of millions of euros in damage. The water reached 1.87 meters above sea level Tuesday, the second-highest level ever recorded in the city. (Andrea Merola/ANSA via AP)

People wade through water in a flooded St. Mark's Square in Venice, Italy, Wednesday, Nov. 13, 2019. The high-water mark hit 187 centimeters (74 inches) late Tuesday, Nov. 12, 2019, meaning more than 85% of the city was flooded. The highest level ever recorded was 194 centimeters (76 inches) during infamous flooding in 1966. (AP Photo/Luca Bruno)

People wade through water in a flooded St. Mark's Square in Venice, Italy, Wednesday, Nov. 13, 2019. The high-water mark hit 187 centimeters (74 inches) late Tuesday, Nov. 12, 2019, meaning more than 85% of the city was flooded. The highest level ever recorded was 194 centimeters (76 inches) during infamous flooding in 1966. (AP Photo/Luca Bruno)

A stranded ferry boat lies on its side, in Venice, Wednesday, Nov. 13, 2019. The mayor of Venice is blaming climate change for flooding in the historic canal city that has reached the second-highest levels ever recorded, as another exceptional water level was recorded Wednesday. The high-water mark hit 187 centimeters (74 inches) late Tuesday, meaning more than 85% of the city was flooded. (AP Photo/Luigi Costantini)

FILE - In this Oct. 9, 2013, file photo, workers build a water barrier with sandbags as floodwater threaten their factory at Amata Nakorn industrial estate in Chonburi province, eastern Thailand. The number of people threatened by climate change-triggered flooding is about three times higher than previously thought, a new study says. But it's not because of more water. It's because the land, especially in Asia and the developing world, is several feet lower than what space-based radar has calculated, according to a study in the journal Nature Communications Tuesday, Oct. 29, 2019. (AP Photo/Apichart Weerawong, File)

FILE - In this Saturday, April 13, 2019 file photo, Seychelles President Danny Faure sits inside a submersible on the deck of vessel Ocean Zephyr, off the coast of Desroches, in the outer islands of Seychelles. Faure warns there's no time for the "blame Game" in the fight against climate change and urges major nations to do more adding that the small island nations, like his, are the least responsible for the problem but the most in danger as sea levels rise (AP Photo/Steve Barker, file)