With a large rally in New York to complement it, the United Nations held a Climate Summit in September. Tara explains what the gathering was really all about.
A new analysis from a climate change organization estimates which coastal countries can expect the most regular flooding by the year 2100. Tara takes a look at which countries are singled out for the worst.
As of today, airplanes using European airports must use credits to account for some of their greenhouse gas emissions.
Living and working within 100 meters (328 feet) of a gas station increases exposure to toxic chemicals.
At the slick new Lucas Oil Stadium in Indianapolis even the lights shining on the New York Giants and New England Patriots will be accounted for by renewable energy certificates.