Reporter Linda Marsa investigated the impact of global warming on our health. Cover your mouth: What she found is terrifying.
The key to convincing Americans to swap out the car for a bike? Make bicycling boring -- and ensure that they won’t end up as road pizza.
More than a third of Copenhageners bike to school or work, but it hasn't always been that way -- and city officials say that's not nearly enough.
In Copenhagen, bikes are as common as vacuum cleaners -- and the people who ride them are bloody amazing.
This month, look at how nature gets into our cities and under our skin, even where we least expect it.
Turns out that, as a business proposition, the sharing economy can be a pretty risky one.
An unused car languishing in a driveway seems like the perfect way to join the sharing economy. What could go wrong?
The president of the largest conservation group in the galaxy says that when it comes to cleaning air and water and standing up to climate change, nature has the best answers.
Global warming almost certainly spells doom for ski resorts. So why aren’t industry leaders making more of a stink about it?