President Joe Biden has committed the United States to its most ambitious climate change target yet. There are, of course, several catches to these lofty goals.
How to Cool a City
A few years ago, Louisville, Kentucky found out it's the fastest warming city in the United States. This will have devastating health consequences for the city's 250,000 denizens. Now city officials are fighting back in what may the largest urban climate change mitigation effort in the country.