A global protest movement backed by 16-year-old activist Greta Thunberg got underway Friday, with students in Australia skipping school and workers walking off the job to demand action on climate change. Tens of thousands of people attended a protest in a central Sydney park, holding up homemade signs with slogans such as “You’re Burning our Future” and “There Is No Planet B.” Protesters also rallied in Melbourne, Canberra and other Australian cities. The Global Climate Strike movement -- which calls on people to walk out of school or their workplace to protest inaction over climate change -- is likely to gain strength later in the day, with events in Europe and the U.S. planned. They’re part of a worldwide series of demonstrations that organizers say will take place in 150 countries on Friday and on Sept. 27. “As we deal with devastating climate breakdown and hurtle towards dangerous tipping points, young people are calling on millions of us across the planet to disrupt business as usual by joining the global climate strikes,” according to a statement on the Global Climate Strike website. The movement has spurred some companies to demonstrate that they’re reacting to the threat posed by a warming planet. Subscribe to our YouTube channel: bit.ly/2TwO8Gm TICTOC ON SOCIAL: Follow TicToc on Twitter: twitter.com/tictoc Like TicToc on Facebook: www.facebook.com/tictoc Follow TicToc on Instagram: www.instagram.com/tictoc Watch all of TicToc’s videos: www.tictoc.video/ Listen to TicToc’s podcast: apple.co/2D3Vta7 Subscribe to our newsletter: bit.ly/2FJ0oQZ TicToc by Bloomberg is global news for the life you lead. We are a 24/7 news network that covers breaking news, politics, technology, business and entertainment stories from around the globe, supported by a network of Bloomberg’s 2,700 journalists across 120 countries.