States

Three strategies can help transform transportation in America — and regional cooperation by states would take things further, faster.

The state used an innovative new law to fight back against the Trump administration’s expansion of oil and gas drilling — and that could provide a model for the rest of the country.

Residents will vote on a ballot measure to reintroduce endangered gray wolves. There’s a strong ecological argument for why they’re needed, says biologist Joanna Lambert.

A new book explains why policymakers nearly 100 years ago chose to ignore the best science on the Colorado River’s flow — and the dangers if we repeat their mistake.

The oil industry has long fought, and will continue to fight, against energy transformation. Here’s how we can fight back.

New kinds of flood plans put nature back in charge, help populations adapt to a changing climate, reduce risk — and more.

A range of new tactics aim to curb cigarette butt pollution, including groundbreaking legislation that could hold tobacco companies accountable for their products’ waste.

A sweeping “circular economy” bill in the California legislature aims to drastically reduce plastic waste and boost domestic recycling.

States that share the river’s water finalized a big agreement last month, but an even larger challenge determining the river’s future is just around the bend, expert John Fleck explains.

There’s much to learn from local efforts — and good reasons why they’ll need to be part of the process, experts say. But can states do it on their own?