Jason Momoa hasn't rocked the shaved beard look since 2012.
Earth Day 2018 is focused on a multi-year campaign to end plastic pollution.
These photos are beautiful, but many of these places will cease to exist if we don't reverse course, fast.
More than 150 countries will commit to the pact, which calls for a rapid end to the rise of greenhouse gas emissions.
An early start date would lock a U.S. president into the deal for four years.
There are just a few minutes on the clock, says Ed Begley Jr., but the game is definitely not over
HBO series and its special Earth Day episode feature kids talking to kids about the environment.