Lava erupts from a fissure east of the Leilani Estates subdivision during ongoing eruptions of the Kilauea Volcano in Hawaii, U.S., May 13, 2018.

A farmer Ash Whitney stands in the middle of a dried-up dam in a drought-effected paddock on his property located west of the town of Gunnedah in New South Wales, Australia. Image taken June 2018.

Small island cays and the prominent tidal channels cutting between them in the Bahamas in a photo taken from the International Space Station. NASA/via REUTERS

A general view of dried-up rivers in the Pilbara region of Western Australia December 2, 2013. Western Australia's Pilbara region, which is the size of Spain, has the world's largest known deposits of iron ore and supplies nearly 45 percent of global trade in the mineral. Picture taken December 2.

An aerial view of Sargassum algae off Cancun, Mexico.

An ipe (lapacho) tree is seen in this aerial view of the Amazon rainforest near the city of Novo Progresso, Para State.

Japan's Mount Fuji is seen covered with snow from an airplane December 5, 2013. Mount Fuji, at 3,776 metres (12,388 feet), is Japan's highest mountain and was granted UNESCO World Heritage site in June 2013.

An iceberg floats in a fjord near the town of Tasiilaq, Greenland. Image taken June 2018.

A houseboat camps on the shore in shallow water in a canyon at Lake Powell near Page, Arizona. The lake, on the Colorado River provides water for Nevada, Arizona and California.

Egmont National Park in New Zealand with Mt. Taranaki at its center is seen in a Landsat 8 satellite image taken July 3, 2014 and released by NASA November 14, 2014. The image is from the book "Sanctuary: Exploring the World's Protected Areas from Space," published by the Institute for Global Environmental Strategies with support from NASA, which was released this week. Picture taken July 3, 2014. REUTERS/NASA/USGS/Handout via Reuters

An aerial view of Nad Al Sheba Desert in Dubai December 9, 2015.

Late summer plankton blooms across much of Lake Ontario, one of North America's Great Lakes, in this photograph taken by an astronaut on the International Space Station courtesy of NASA. Microscopic cyanobacteria, or blue-green algae, can reach such large concentrations and color the water to such an extent that the change is visible from orbit. REUTERS/NASA/Handout

An aerial view of the Iguazu Falls is seen in the Argentinian northwest province of Misiones June 9, 2014. Authorities were forced to close down the iconic Iguazu National Park on Monday after heavy rainfall in the region caused the Parana, the river feeding into the falls, to flood. The tourist walkways and viewpoints that normally give way to breathtaking view of the falls were almost completely submerged in water. Picture taken June 9, 2014.