January Stargazing: Orion Nebula By Jeremy Miller January 1, 2020 The night sky this month reminds us space is both empty and very full In this story: astronomy
Jason Carney Is a Solar Evangelist By Naomi Snyder January 1, 2020 The founder of Energy Electives spreads the good news about solar energy In this story: clean energy
Wildness Is Everywhere By Stephanie Jimenez December 31, 2019 How Queens taught me there's no wrong kind of nature In this story: saving wild places
Fran Silva-Blayney Is Forever Fighting PFAS By Wendy Becktold December 30, 2019 This Sierra Club volunteer works to reduce toxic contamination in Colorado In this story: activism
The Case for Turning Farms Back Into Habitat By AC Shilton December 29, 2019 Isabella Tree champions the biodiversity of ecosystems in "Wilding" In this story: ecosystems, books
Is Geoengineering a Solution to Global Warming? By Jason Mark December 29, 2019 "After Geoengineering" documents a spectrum of planetary interventions In this story: books, climate change
Letters to the Editor By SIERRA Staff December 28, 2019 Readers respond to Sierra's issue on gender, population, and the environment
Mark Ruffalo, Real-Life Eco-Hulk? By Katie O'Reilly December 28, 2019 The actor talks about marrying his career with his activism in “Dark Waters” In this story: film, dirty fuels, fracking
A Conversation With E.O. Wilson By Jason Mark December 28, 2019 The eminent biologist discusses his “Half-Earth” vision and adventures with ants In this story: climate change
Untangling the Problem of Ocean Plastic By David Helvarg December 27, 2019 Mary Crowley captains the search for discarded fishing nets In this story: activism
ICYMI: 2019, The Year in Good News By Paul Rauber December 27, 2019 A weekly roundup for busy people In this story: climate change
How to Keep Your Christmas Tree out of the Landfill By Megan Hill December 26, 2019 Upcycle it into an ecofriendly ghost of Christmas past In this story: holidays
From Girl Who Loved Math to Solar Roboticist Adapted from an interview by Heather Smith December 26, 2019 The key to making solar that lasts is to treat it like infrastructure In this story: clean energy
The Most Important Environmental Stories of 2019 By Jason Mark December 26, 2019 Here are the issues that shaped the past year—and will ripple out in 2020 In this story: climate change
The World According to David Yarrow December 25, 2019 The fine-art photographer turns a transcendent lens toward the wild
David Yarrow Makes Fine Art out of Wild Nature December 25, 2019 A polar bear in Svalbard, Norway, leaves only footprints In this story: photography, wildlife
Who You Gonna Call? Algae-Bloom Busters By Emma Penrod December 24, 2019 A sewer plant in Utah is fighting algae with algae In this story: technology
Destination Fire Tower: 6 Great Hikes By Megan Hill December 23, 2019 How to enjoy some of America’s top lookout views In this story: hiking
On Scaling a Historic Fire Tower in Washington's North Cascades By Megan Hill December 23, 2019 The allure and romance of remote, one-room mountaintop cabins In this story: hiking
How Lebanese Environmentalists Helped Spark Revolution By Alexandra Talty December 22, 2019 Activists work to chart a greener path for Lebanon In this story: climate change