You know where your coffee beans come from -- so why not your gasoline? Did your $3.50 a gallon go to prop up our tar-sands-addicted frenemies in Canada?
Pooping in a bucket might not save the world, but this is definitely going to be stuck in your head for a while.
Need some last-minute Valentine’s Day inspiration? No worries: We help you celebrate your significant other without hurting your significant Mother (Earth).
Americans' ideal home size declined to 2,100 square feet from a peak of 2,300, according to real estate research firm Trulia.
Guilt trips and penalties don't always work to change behavior. What if we make it more fun to do the right thing?
A reader wonders if there are any palm-oil-free butter substitutes. Umbra spreads her knowledge.
Any morally acceptable pathway to prevent catastrophic global warming includes broad access to affordable birth control for the world's women.
With the value of the residential green building market expected to grow fivefold by 2016, builders say going green is great for their business.
Once upon a time, there was going to be a ban on the sale of bottled water at the Grand Canyon, because apparently people can’t be trusted to tell the difference between a majestic natural wonder and a public rubbish …