The new carbon-cutting standard gives every state the opportunity to chart its own energy future.
Like the United States, Brazil has a long way to go with its response to global warming.
It's hard to say which is worse.
The EPA's new carbon-cutting safeguards will take a big bite out of climate disruption while reducing soot, smog, and other pollutants.
Americans need to hear from the media about the climate crisis even if there's a shortage of cheerful angles.
Obama must either ditch his all-of-the-above energy strategy or forget about leaving a climate-healing legacy.
California isn't experiencing cold weather this winter, but it's as vulnerable to the deepening climate crisis as the rest of the country.
From now on, naughty children will no longer receive coal in their stockings.