Venice

The U.N. Educational, Scientific, and Cultural Organization is urging governments to protect World Heritage Sites - including Mount Everest and Venice - from global warming.

At a conference in Lithuania Monday, UNESCO said the outstanding universal value and integrity of these places must be protected from the adverse effects of climate change.

The list of at-risk sites includes glaciers in Alaska, Canada, and Greenland; barrier reefs along the coasts of Australia and Belize; and Tanzania's Mount Kilimanjaro.

Also Monday, UNESCO removed four sites from its Danger List, citing improved conditions for their survival - the 13th century cathedral in Cologne, Germany; Senegal's Djoudj Bird Sanctuary; the Group of Monuments in Hampi, India; and Ichkeul National Park in Tunisia.