Fifth Harmony accept the most buzzworthy international artist or group award during the iHeartRadio Much Music Video Awards (MMVAs) in Toronto, Ontario, Canada June 19, 2016. (Photo by Fred Thornhill/Reuters)

A British Airways passenger plane flies in front of the moon above London, Britain, May 3, 2018. (Photo by Toby Melville/Reuters)

A flock of sheep huddles together while snow spindrift is whipped up by strong winds in Swaledale, North Yorkshire, UK on March 17, 2017. (Photo by Paul Kingston/NNP North News & Pictures Ltd)

Ruby Rose releases fire at the start of the start of the MTV European Music Awards in Milan, Italy, Sunday, October 25, 2015. (Photo by Luca Bruno/AP Photo)

Lindsay Heimbach goes airborne while sledding down a hill on Mt. Lemmon December 27, 2008. (Photo by James Gregg/Arizona Daily Star)

A storm is seen in Sarasota, Florida, June 24, 2018. (Courtesy of Val Vasilescu/Facebook.com/Kingofsunsets via Reuters)

The amazing gallery shows parts of London shot from above – and the views are breathtaking. Jason Hawkes, an aerial photographer from Reading, England, captured the images over the past six months while flying in AS355 helicopters. Here: The city of London at dusk. (Photo by Jason Hawkes/Caters News Agency)

Growing cities, overuse of fertilizers and factory wastewater have degraded China's water supplies to the extent that half the nation's rivers and lakes are severely polluted. China aims to spend $850 billion to improve filthy water supplies over the next decade, but even such huge outlays may do little to reverse damage caused by decades of pollution and overuse in Beijing's push for rapid economic growth. Photo: Fishermen row a boat in the algae-filled Chaohu Lake in Hefei, Anhui province, June 19, 2009. (Photo by Jianan Yu/Reuters)