"About 40 historic Mediterranean sites, representing cultures extending from the Phoenicians through the Venetians, are already at risk due to rising seas, research finds."

"William D. Nordhaus, the Yale economist who shared the Nobel in economic science this week, has pointed words for some of the experiments so far with his theories on taxing polluters to fight climate change."

"Large Pacific bluefin tuna not seen in California waters for decades have reappeared, to the delight of fishing enthusiasts and scientists, as global conservation efforts have proven effective for one of the ocean’s priciest and most sought-after fish."

"A national fight that could slow the spread of rooftop solar has landed in Michigan, where utility regulators are weighing a proposal that would cost consumers more to produce their own power."