Pacific Science Center hosts fun-slash-educational Earth Day activities today — get a bird's eye view of the blue marble at Willard Smith Planetarium, check out a tide pool feeding and tour pollinator gardens. All special activities are included with admission.
You can also head to Seattle Children's Museum and take an Earth Day Monorail ride: Sign up for 10:30, noon or 1 pm tours and check out other fun events.
If you'd rather stay close to home, try this easy Earth Day art project you can do with your kids and pick a simple resolution or two for making the planet better.