Colorado activists celebrate first-of-their-kind statewide fracking rules.
Meet Brad Bradley, conservative conservationist, renovator of abused land and Sierra Club Life Member.
Bikes are already pretty near perfect. Here are 5 ways to make them even more visible, safe, and fun.
A 'shroom-based alternative to Styrofoam; fungi's crucial role in carbon storage; and using oyster mushrooms to "mycoremediate" damage from pesticides and storm runoff.
90 companies around the world have caused nearly two-thirds of all global greenhouse gas emissions since the beginning of the Industrial Age.
Uh oh: A giant hornet with a bad temper that can fly at 25 miles per hour and is attracted to the smell of sweat--or fear.
The fearsome European hamster is described by BBC Wildlife as "somewhat laddish" and "bolshy in temperament" (i.e., macho and aggressive). It's also too tasty for it's own good.
On the one hand: Climate change is depleting the ozone layer, so you need sunscreen to protect yourself from UV rays. On the other: Chemicals from washed-off sunscreen are damaging aquatic ecosystems.