Credit: Twitter Earlier that day, 18-year-old Thunberg had also called out leaders' 'bulls***'. She posted a video on Twitter in which she said the targets set by world leaders were not as 'ambitious' as they claimed, but were actually 'full of gaps and loopholes'. Advert 10 She tweeted: "When you compare the overall current best available science to their insufficient, hypothetical 'climate targets' you clearly see that there's a gap, there are decades missing. "Until we address this gap, no real solutions will be found. "Let's call out the bulls***." Thunberg often uses her social media platforms to respond to issues around the globe - including strange remarks made by other world leaders.