Almost Half Of World Heritage Sites Are Threatened, Report Finds

Nearly half of the planet's world heritage sites are threatened by development, despite international protections, according to a report released Wednesday by the World Wildlife Fund.

The 229 heritage sites in 96 countries include Egypt's pyramids, Florida's Everglades National Park and Australia's Great Barrier Reef. The WWF report found that 114 of these sites are under threat from oil and gas development, illegal logging, overfishing or other industrial activities.