Like a scene straight out of a horror film, a Turkish lake known for its salinity turned a deep shade of red recently. The country's Tuz Gola– nicknamed "Salt Lake" by the locals– turned red because of , ABC News reported. The lake, which is Turkey's second largest, spans more than 600 square miles and , according to the United Nations. In the slideshow at the top of this page, you can see an image of what the red algae...

This small lake, which overlooks a permafrost thaw slump near Fort McPherson in Canada's Northwest Territories, is poised to fall over the cliff below when the thawing permafrost holding it up finally collapses. (Scott Zolkos, University of Alberta/Northwest Territories Geological Survey) Deep in the forests within Canada's Northwest Territories, there's a small lake perched on a cliff that's about to collapse. The earth that's holding it up will soon give way, scientists say, because it's made up mostly of permafrost...

As our planet becomes increasingly more unpredictable, the world's big cities will need a plan to become more resilient to a slew of threats. That's why the Rockefeller Foundation for the expected and unexpected challenges of the 21st century. Through the 100 Resilient Cities organization, the foundation is working with the cities chosen to develop plans for weather disasters, like drought, tropical storms and extreme heat, as well as other challenges created by extreme weather, like floods, fires and food...