What's billed as the world's largest environmental experience kicks off Friday in Dallas.
Earth-X will open at Fair Park, just in time for Earth Day this weekend. It runs through Sunday.
It's an environmental expo, conference, and film festival.
The latest news from around North Texas.
One of this year's events is a solar roller competition featuring students' solar powered cars.
Tickets are $5 at the door for unregistered guests.
Free registration is available online.