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At Grand Staircase–Escalante, locals help others "leave no trace"

Here’s what you need to know about the UN treaty on plastics

We have an opportunity to tackle climate change and the public health costs of air pollution at once

Climate change is leading to hotter temperatures. Here’s how to protect yourself.

Because of climate change, this summer threatens to be a scorcher. It’s time to adapt.

By leaving carcasses, mountain lions create lush landscapes for future victims that could attract prey

Celebrate our newest national holiday by freeing your mind

The historical roots of Louisiana’s Cancer Alley can be found in slavery

In order to finally clear the air, Los Angeles needs to stop burning fossil fuels

It's sustainable, it's healthy, and it tastes good

A weekly roundup for busy people

The nuclear industry is stuck in a “reverse learning curve”

Why climate-obsessed travelers should ditch the guilt and support efforts to cut aviation's carbon footprint

Is a future without air travel possible?

Day one of the historic youth climate trial in Helena

Across the American West, forests are failing to regenerate after high-intensity wildfires, but that doesn't have to mean they're gone for good

Residents of the town of Marina say it’s all a utility scam

The city says it needs extra water. But it's for fossil fuel and plastic corporations—not people

Here are five organizations that help members of the queer community experience nature

The Sierra Club executive director gets ready to visit the Arctic National Wildlife Refuge