Scientists who exposed mice to BPA at low-level, consistent doses found that it caused genetic and behavioral changes that persisted for generations.
A reader wants to find a sustainable alternative to her dog's disposable pee pads. Umbra sniffs around for an answer.
The average boy partakes in two minutes of “vigorous activity” each day. The average girl, just one minute. The solution is right down the street.
We're rinsing off an Ask Umbra classic about power showers.
The EPA suspects that Disney Studios may have introduced carcinogenic chromium 6 into the regional water supply.
As more cities adopt municipal composting programs, the range of to-go ware made from bioplastics is expanding. Here's what you need to know about what's real, what's greenwashing, and why it matters.
Emma Marris, author of "Rambunctious Garden," challenged noted conservationist E.O. Wilson by arguing that we should learn to value all types of nature -- human-altered places as well as pristine landscapes.
No matter how much evidence we trot out about how dense living is superior, someone’s always going to demur because they want a big house with a big yard. And you can only get those in the suburbs, right? Well, …
Can you imagine just being able to sit around and watch television all weekend on your massive energy-sucking flat screen while someone else niftily, sustainably, mowed your lawn? Someone you didn’t have to pay? Someone you didn’t even have to …