Global concentrations of carbon dioxide in Earth's atmosphere surpassed 400 parts per million this past spring for the first time, breaching a symbolic barrier set by climate scientists and policy makers, according to a report released this week.
The world's oceans are facing a bleak future, say marine scientists, unless we rebuild its abundance, variety and vitality. (CNN) -- As the human footprint has spread, the remaining wildernesses on our planet have retreated. However, dive just a few meters below the ocean surface and you will enter a world where humans very rarely venture.
If the pace of the rise accelerates as much as expected, researchers found, coastal flooding at levels that were once exceedingly rare could become an every-few-years occurrence by the middle of this century.
If the pictures of those towering wildfires in Colorado haven't convinced you, or the size of your AC bill this summer, here are some hard numbers about climate change: June broke or tied 3,215 high-temperature records across the United States.
Another very wintry week is underway for much of the eastern 2/3rds of the United States with the arctic cold pushing its way south through the heart of America and down the Gulf Coast. There are winter storm warnings from Louisiana to North Carolina and a major snowstorm is looking increasingly likely for areas that can go years without seeing a flake.