The document discusses the upcoming Global Climate Strike on September 20th organized by Greta Thunberg and youth organizations to demand an end to fossil fuels and climate justice. It encourages creating signs, art, or other projects to amplify the message of the climate emergency and enter them into a competition hosted by Tate Modern. The document provides facts about the impacts of climate change and examples of past climate activism to dramatize the urgent need for action to address rising global temperatures and protect future generations.