Earth Week: Monday was Earth Day, new studies and polls show changes in attitudes toward our planet, confirm warming trends, and show some progress in addressing global warming.
On Earth Day 2013, a planetary report card on global warming
Earth’s cooling came to sudden halt in 1900, study shows
Earth Day 2013: What’s in danger is Earth Day, not just Earth
Photos: (Top) Emperor penguins walk across sea ice near Ross Island, Antarctica. Thomas Beer/AP
(Left) The sun sets behind an oil refinery on Rosedale Highway, in Bakersfield Calif., in 2007. Casey Christie/The Bakersfield Californian/AP
Graphics by Rich Clabaugh/The Christian Science Monitor