For the first time in human history, the amount of carbon dioxide in the air has passed 400 parts per million, a symbolic mark that has not been reached for 3 to 5 million years.
The federal National Oceanic and Atmospheric Administration says that soon, possibly within the next few decades, there will be almost no ice in the Arctic during the summer.
Mayflower, Ark. has been hit by a large oil spill from the ExxonMobil-operated Pegasus oil pipeline, causing hundreds of thousands of gallons to pour into yards and streets, Exxon confirms.