When you’re 11 years old, the future can look limitless — unless you fear your planet is dying.

Theo Sullivan got worried about climate change and decided he had to do something.

So, this fifth-grader at Washington Elementary School organized Tacoma's part in a global strike by schoolchildren on Friday. He spoke with KUOW’s Angela King about his reasons for acting.

Theo Sullivan: I think my mom had a conversation about climate change a few years ago and I was just like, the world's getting hotter. I was just like: "What? Oh! That's kind of scary. Why would they do that?"

Angela King: What worries you the most? Global warming or the polar caps melting?

Sullivan: I don't want Florida to be enveloped in water. Also I don't want to have to be inside all summer because of the smoke.