Vital Signs of the Planet : Global Climate Change and Global Warming

Urban Growth, Egypt 

As recently as the 1980s, only 12,000 people lived in Hurghada. By 2014, more than 250,000 people lived there and more than 1 million tourists visited each year, drawn by some of the world's best diving and snorkeling. But the local environment, particularly the coral reef ecosystem, has paid a price. According to one study, corals near Hurghada have declined by as much as 50 percent over three decades due to the dredging and dumping of sediment, damage from careless snorkelers and divers, and other factors related to the area's development.

Article contributed by Nasa,