When we go to the store, we bring home more than food - we bring home traces of broader environmental problems. But we can use our shopping carts and dinner plates to help solve some of those problems.
Young people are already leading on climate action. I see it at rallies to reject the Keystone XL dirty tar sands pipeline. I see it in the push to demand justice for communities being run over by fracking operations.
Climate change is the central environmental ill of our time. We have an obligation to protect our children from the dangers of this widening scourge, and we aren't yet doing enough about it.
Pollution from human activities is changing the Earth's climate. We see the damage that a disrupted climate can do: on our coasts, our farms, forests, mountains, and cities. Those impacts will grow more severe unless we start reducing global warming pollution now.
We look back at the 1990 Clean Air Act amendments, where people screamed and hollered it's going to be too expensive, they couldn't afford it, and it wouldn't work. And it worked. It worked faster than people expected, at much less cost.
Wind and other clean, renewable energy will help end our reliance on fossil fuels and combat the severe threat that climate change poses to humans and wildlife alike.
The San Gabriel Mountains rise like a rampart at the edge of the city, safeguarding more than 500,000 acres of mature forests, mountain streams, dramatic waterfalls, and towering peaks that reach over 9,000 feet. These untamed places attract bighorn sheep, mountain lions, and other threatened or endangered species.
We can choose food that doesn't lead to illnesses like diabetes and cancer. We can choose food that doesn't contribute to water pollution and climate change. And we can choose food that keeps local economies vibrant and farmers on their land.
California's drought affects everyone in the state, from farmers to fishermen, business owners to suburban residents, and everyone has a role to play in using precious water resources as wisely and efficiently as possible.
Many environmental battles are won by delaying a destructive project long enough to change the conversation - to allow new economic, political and social dynamics to emerge.
Carbon pollution contributes to climate change, which causes temperatures to rise. Hotter temperatures mean more smog in the air, and breathing smog can inflame deep lung tissue. Repeated inflammation over time can permanently scar lung tissue, even in low concentrations.
I was in college when tens of thousands of people marched on Washington for the first Earth Day. Raw sewage floated in rivers and clouds of smog hung over cities. But then something amazing happened. People spoke out. Thousands of students, workers, and ordinary citizens used their voices to say, 'This has to change.'