The U.S. took an aggressive stance on climate change Thursday at the Copenhagen summit, promising to help raise $100 billion a year for developing nations struggling with the negative effects of global warming. Ray Suarez reports from the talks.
Protesters outside the Copenhagen climate change summit clashed with police on Wednesday as more than 100 world leaders made their way to the Danish capital. Negotiators continue to battle over reaching a climate agreement in the conference's waning days.
As scientists debate how to address climate change, one proposal for businesses creates a carbon credit system that allows emission producing companies to buy credits from companies that use energy efficient technologies as a way to offset overall environmental impact.
The U.N. climate change conference ended in Bali Saturday with a last-minute deal that sets the terms of a "roadmap" for a new climate change treaty. The talks were described as emotional, with discontent directed toward U.S. objections to specific…