These youths are serious when they say they have a plan to fight climate change: They want to plant a billion trees in Washington alone, on the way to planting a trillion trees around the world.

They’re part of an international youth organization known as Plant-for-the-Planet. Their program is to plant a trillion trees and move to 100 percent renewables by 2050. Anything less, they say, will shortchange them of a right to a secure and happy future.

Now they’re coming to Port Angeles to train 45 local youths, ages 9-14, to be “Climate Ambassadors” by attending a “Plant-for-the-Planet Academy” from 9 a.m.-5:30 p.m. Saturday, Oct. 24, at the Elwha Klallam Heritage Center, 401 E. First St.

The workshop is co-sponsored by Plant-for-the-Planet, Clallam County 4-H and Olympic Climate Action. Snacks, lunch and transportation to the tree-planting site will be provided.

Leading the workshop will be Michael Foster, founder of a Plant-for-the-Planet chapter in the Puget Sound area.

At the academy, students will learn about the science, politics and economics of climate change and greenhouse gases, learn of Plant-for-the-Planet’s program to prevent a climate catastrophe, plant trees and practice being Climate Ambassadors.

Online registration is now open, but limited to the first 45 students on climatechangeforfamilies.com, a website for students and families in the Pacific Northwest.

Parents also may register to volunteer at the academy.