8 Earth Day trailblazers

Meet the people who are making progress on climate change, saving our oceans, and more.

Earth Day is a commitment to make life better, not just bigger and faster,” wrote the organizers of the very first incarnation, celebrated on April 22, 1970. From determining the "greenest" times for energy use to creating cost-effective techniques to purify water from the sun's rays, here are eight creative scientists and activists who are delivering on that promise.

1 / 7