Greta Tintin Eleonora Ernman Thunberg is a Swedish environmental activist who is internationally known for challenging world leaders to take immediate action against climate change. Wikipedia Born January 3, 2003 age 18 years , Stockholm, Sweden Height Parents Svante Thunberg, Malena Ernman Books No One Is Too Small to Make a Difference, Scenes from the Heart Awards Right Livelihood Award, Glamour Award for The Revolutionary, More this is greta thunberg she has done nothing for this country yet is still one of the most famous environmental ts Boyan Slat is a Dutch inventor and entrepreneur. A former aerospace engineering student, he is the CEO of The Ocean Cleanup. Wikipedia Born July 27, 1994 age 26 years , Delft, Netherlands Nationality Dutch Organization founded The Ocean Cleanup Educat