Greta Thunberg is one of the most popular climate change activists today. She is eighteen years old, from Sweden. She thinks climate change is the biggest problem for youth right now, if they don't know about it and try to do something their future will be in danger. She started with a one-person protest outside the Swedish parliament, which quickly spread across the world. She has helped educate people of all ages, especially young people, about the importance of climate change and denounced the ineffectiveness of world leaders on the issue. She was one of Time magazine's 100 most influential people, on Forbes' list of the 100 most powerful women in the world, and was nominated for three Nobel Peace Prizes. Her stance on climate change is based on the idea that young people will have to suffer the most from the government and older generations not taking charge of the climate crisis. She is helping to lead by example and teach young people around the world so that they have the knowledge and skills to deal with this great problem.