Swedish teenager Greta Thunberg took her fight for climate change to Capitol Hill for a second day, demanding lawmakers “take real action.” (Sept. 18)

Recycle. Plant a tree. Turn the lights out.

When the book “50 Simple Things Kids Can Do To Save The Earth” published in 1990, children were taught small ways to have a positive environmental impact and offset others’ negative impacts.

Selling more than 1 million copies with over half a million in its first year, it became a staple in classrooms and kicked off conversations around how to practice sustainability every day. 

Today, many kids are thinking a bit bigger.

Some tens of thousands of children are leaving their classrooms on Friday to demand systematic actions to address a growing climate crisis as youth-driven, grassroots organizations coordinated demonstrations and young activists testified on Capitol Hill this week.

While simple individual level actions are beneficial and can in part help address global climate change, advocates and scientists…