Our Most Popular Content

Venus can be spotted after sunset in the west.
Green Life
Monday, February 2, 2015
Picturesque planet clusters and a final view of Comet Lovejoy
Lester Johnson
Faces of Clean Energy
Wednesday, April 2, 2014
Inside a wind turbine factory with one of the workers who make them.
Giants stadium garden
Green Life
Wednesday, October 1, 2014
Will fresh veggies replace hot dogs at baseball games?
In some Southern states, leasing rooftop solar panels is illegal, energy efficiency is a novel concept, and the governor lobbies for the local coal-friendly utility. How does the South get to clean power from there?
Friday, October 3, 2014
In some Southern states, leasing rooftop solar panels is illegal, energy efficiency is a novel concept, and the governor lobbies for the local coal-friendly utility. How does the South get to clean power from there?
Green Life
Friday, January 30, 2015
The Saudis leave their tap wide open, drowning Canada's expensive tar-sands fields in a sea of cheap oil.
UC Davis
Cool Schools 2013
Sunday, September 15, 2013
Sierra magazine's seventh annual rankings of America's greenest universities
Leela, 10, spent most of her life in a cage at a puppy mill as a breeding female  until Wonder Dog Rescue found her a home.
"Recycled" dog photo shoot.
6 Haunted Hiking Trails -- Do You Dare?
Green Life
Thursday, February 12, 2015
Many of the country's trails have rich and creepy histories, and you'd be surprised at just how many ghosts have apparently chosen to spend the afterlife spooking unsuspecting hikers.
Sterling Coleman on Mount Washington
Green Life
Tuesday, July 22, 2014
How a backpacking novice hiked one of the longest trails in North America.
Green Life
Monday, October 6, 2014
How do you get rid of them? And what about the bottles?
Hey Mr. Green -- Find out the answer
Green Life
Thursday, August 28, 2014
Urban gardeners beware - lead may be lurking in your soil. Mr. Green tells us how to remedy the problem.
The Planet
In what turned out to be a surprise to virtually no one, the House voted yet again to approve the Keystone XL tar sands pipeline last Friday. This is the 10th time in recent years that the House has cast such a vote, but for the first time, the Senate is expected to follow suit.
The 500-foot exhaust stack of the Mohave Generating Station  in Laughlin, Nevada, was felled by explosives on March 11, 2011.
Friday, July 25, 2014
As renewables get cheaper and climate risks grow, Wall Street sours on the coal industry.
partial solar eclipse
Green Life
Monday, October 20, 2014
The moon will block out a section of the sun on October 23.
Green Life
Wednesday, August 6, 2014
Did you know that some urban landscapes offer more variety for foragers than the wilderness? Grab your basket and enjoy your city's abundance!
Are you a semi-adventurer who's  chagrined by the array of pristine boots, bags, and jackets amassed in your  garage? Try these pieces of gear instead.
Gear Guide
Friday, December 12, 2014
Gear that works as well in town as it does on the trail.
How to win the 5 most competitive park permit lotteries in America
Green Life
Wednesday, October 22, 2014
The odds of you winning one of these lotteries are lower than any other park in America.
Bioplastic Innovations of 2014
Green Life
Monday, June 9, 2014
Your next plastic coffee cup could be made from shrimp and the straw from avocados. Read up on the 5 bioplastic creations that could change the future of waste and our dependence on petroleum-based plastics by using innovative ingredients.
cool schools full ranking
Wednesday, July 30, 2014
Behind the scenes of Sierra's Cool Schools cover.
Hey Mr. Green, should I care how far my food travels?
Green Life
Wednesday, February 11, 2015
Your trips to the grocery store are worse than the big rigs that transport food.
College students, faculty, and administrators at North Carolina's Brevard College are cheering at Friday's news that the school will divest from fossil fuels by 2018 -- making it the first university in North Carolina and in the entire Southeast U.S. to divest!
Bat-eating spider
Sunday, September 1, 2013
Large tropical orb weavers of the genus Nephila, whose strong webs can span five feet, are voracious bat-chompers.
Urban farmer Kitty Sharkey often takes her four Nigerian dwarf goats for walks through her Oakland, California, neighborhood.
Urban farming reaps the benefits of hyperlocal food
Green Life
Tuesday, July 22, 2014
Plastic isn’t just the litter of today — it’s becoming part of tomorrow’s rock record.
Crowd sourced apps for outdoor exploration
Green Life
Wednesday, June 4, 2014
These apps use crowdsourced data to make outdoor exploration even better.
Green Life
Wednesday, July 9, 2014
These TED Talks will inspire small changes for a more environmentally responsible lifestyle.
"None of us should have to be here right now fighting for our right to breathe." That's what a young woman told the Environmental Protection Agency (EPA) at a hearing this week about smog pollution, after boarding a bus with 100 high school students before dawn and traveling for hours to deliver her three minutes of testimony. The students live in a county with some of the worst air pollution in America, and one after another, they shared their personal stories, many noting they made the trip...
Cryptid Vacation Spots
Green Life
Monday, June 16, 2014
Search for creatures of legend and explore their beautiful natural habitats.
API by istock user TimArbaev
Green Life
Thursday, December 4, 2014
Access to America's public lands boils down to three little letters: API.
The Green Life
Make some time to stargaze in May and you could catch a glimpse of Mercury and Saturn.
Find out your options to recycle a used car seat.
Green Life
Wednesday, January 7, 2015
Ten million car seats are purchased each year; most end up in the landfill. That doesn't have to happen to yours--but it will take some legwork on your part. Thus sayeth Mr. Green.