4 Million Strike for Climate

An estimated 4 million people on all seven continents participated in a climate strike on Friday, September 20. “No matter where the strikes took place, or in what language the protestors sang, the message was the same,” says Sierra magazine editor-in-chief Jason Mark. “It’s long past time for the world’s great powers to take swift and sweeping actions to stop the greenhouse gas emissions that are dangerously warming the planet.”

• Read Mark’s recap of what went down last Friday.
• Check out our gallery of photos from the Climate Strike.
• Sign up to find out what's next.

You Can’t Put a Price Tag on Life

The Trump administration’s proposal to dramatically weaken the Endangered Species Act amounts to death by a thousand cuts. If the administration has its way, profit-seeking will eventually eclipse the need to protect at-risk species.

Will Antarctic Ice Doom Us All?

For years, scientists have struggled to figure out exactly how much methane is trapped under the ice at the north and south poles and what it might mean for global temperatures. A new study provides the most comprehensive estimate to date for Antarctica: it holds a staggering 80 to 480 gigatons of this potent greenhouse gas.

What Is a Nontoxic Solution for Dirty Carpets?

Thinking about professionally cleaning your carpets? Steer clear of perchloroethylene, which is often used to clean carpets and dry clean clothing.

8 Pieces of Gear That Fold Up Like Origami

Gearing up for a trip into the outdoors? Avoid an overstuffed closet by opting for clever designs that fold and tuck away.

From a bike helmet to a kayak, this origami-inspired gear is so low-profile that even apartment dwellers can stock up for alfresco adventures.

Trump’s Coming for Your Local Waterways

The Trump administration's next attack on the Clean Water Act would keep your state from demanding that big polluters protect local waterways and drinking water sources. State governments and groups like the Sierra Club use Section 401 of the Clean Water Act to protect your local waterways.

National Park Passes for Fourth-Graders

The Department of the Interior has officially launched the new Every Kid Outdoors pass for the 2019–2020 school year—the fifth consecutive year the popular program has been funded. The program grants nearly 4 million fourth-graders and their families free admission to our national parks and all federally managed lands.

Reaching the Park Without Having to Park

People need nature near where they live. But not everyone is privileged enough to have access to a local park. People of color and low-income families in cities across the US are significantly less likely to live near a park or green space. The Transit to Trails Act would increase equitable access to public lands via public transportation.

Chemical Crisis

For decades, the military has extinguished fires with foams containing toxic per- and polyfluoroalkyl substances (PFAS) that now pollute the drinking water of more than 100 million Americans. Congress has a chance to ban the military’s use of these toxic chemicals, expand studies on the harm of PFAS, and ensure that our water supply gets cleaned up.

Kevin's Adventures With Team Sierra

This summer, Kevin Mallory hiked 2,650 miles on the Pacific Crest Trail to raise money for the Sierra Club. A lifelong nature lover, Kevin’s goal was to experience the energizing, restorative magic of the great outdoors—and to help protect it. In addition to hiking, sharing his beautiful writing, and making music, Kevin sought to raise $1 for every mile he walked.

Jump Start 2020 With These International and Winter Journeys

Get started on your 2020 travel plans with our international and winter domestic trips, which are live and ready for reservations. Take your pick of 150+ experiences ranging from restoring endangered species’ habitats in Arizona to hiking Germany’s Witches Trail. And be sure to mark your calendar for Friday, October 11, when we launch our newest offerings, including Alaska, Hawaii, and the American Caribbean, and our spring domestic trips.

Sierra Club Half Dome Socks

Our partnership collection with Parks Project now includes some flair for your feet! Adventure on in style and comfort and help protect America's wildlands, wildlife, and the health of our communities. As always, 20% of each sale goes to support the Sierra Club.

Coal Ash In Your Water

Since 2002, AES Corporation has dumped 400,000 tons of coal ash in Guayama, Puerto Rico, without the safeguards necessary to protect the community's soil and water, leaving residents with one of the highest cancer rates in Puerto Rico.

Now the Trump EPA is seeking to make it easier than ever for companies like AES to expose communities to carcinogenic coal ash. We need your help to stop them.

Bioneers Conference

Feeling despondent about the state of the world? Don’t be! Bioneers connects you with solutions for our most pressing social and environmental challenges. Join us & engage with 200+ speakers, including Terry Tempest Williams, Bill McKibben, Winona LaDuke, Paul Hawken, Kali Akuno, Valerie Kaur and more.

Tickets are going fast for the 30th Bioneers Conference. Register now, prices increase on October 1st.