redOrbit: In an attempt to combat global warming, President Barack Obama on Tuesday urged Congress to prepare legislation that will set a market-based cap on U.S. carbon polluting emissions and push the production of more renewable energy, Reuter reported. Obama told lawmakers at a joint session of Congress: “To truly transform our economy, protect our security, and save our planet from the ravages of climate change, we need to ultimately make clean, renewable energy the profitable kind of …