A man gathering firewood to sell cuts down mangrove trees in the coastal area of Medan city on Indonesia's Sumatra island on Jan. 31. The country, which has one-quarter of the world's mangroves, is losing them at a rate of 6 percent a year. The coastal forests play important ecological and environmental roles.
Suntanta Aditya/AFP/Getty Images
Noah Stewart shelters in the closet just 15 minutes before an April 2011 tornado demolished his house. Wearing the helmet may have saved his life, one doctor says.
Courtesy of the Stewart family
Germany plans to take all of its nuclear power plants offline by 2022, which means coal-fired power plants like the Kraftwerk Westfalen, in Hamm, Germany, will be a key component of the country's energy infrastructure.
Lars Baron/Getty Images