If America and its allies put sanctions on Iran, the Iranian navy could block the Strait of Hormuz, an important channel for international oil shipments.

Have Republicans ensured the death of Keystone XL by pushing Obama to decide one way or another about the pipeline?

Your support powers solutions-focused climate reporting — keeping it free for everyone. All donations DOUBLED for a limited time. Give now in under 45 seconds.
Secure · Tax deductible · Takes 45 Seconds

Stories like this don’t tell themselves.

Make others like it possible. Your support powers solutions-focused climate reporting — keeping it free for everyone. Give now in under 45 seconds.
Secure · Tax deductible · Takes 45 Seconds

The EPA is scaling back requirements for cellulosic ethanol in the coming years.

Presidential candidates are allowed to criticize ethanol now — even in Iowa.

To support our nonprofit environmental journalism, please consider disabling your ad-blocker to allow ads on Grist. Here's How

These NASA photos document the growth of the Athabasca tar sands pits in Alberta.