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.
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?
The world needs to triple the energy it gets from renewables, nuclear reactors and power plants that use emissions-capture technology to avoid dangerous levels of global warming, United Nations scientists said.