Global warming is depleting fresh water and crops, destroying coral reefs and melting the Arctic, the United Nations said today in a report that concludes the world is ill-prepared to face many new threats.
Global warming has slowed since 1998 as pollution reached record levels and rising seas became a more pressing concern, according to a United Nations report that’s hardening views on both sides of the climate debate.
Okay, fine. You're persuaded that climate change is a problem. So if we can work out the costs and benefits of reducing carbon emissions, we'll be able to decide on the cheapest course of action, right?