Climate activist Greta Thunberg, 16, drew global praise on Monday for her speech at the UN Climate Action Summit. The Swedish teenager criticised world leaders for their &lsquobusiness as usual&rsquo attitude towards controlling emissions, despite decades of evidence about global warming and the irreversible changes it is wrecking onto the Earth. "To have a 67% chance of staying below a 1.5 degrees global temperature rise&ndashthe best odds given by the [Intergovernmental Panel on Climate Change]&ndashthe world had 420 gigatons of CO2 left to emit back on January 1, 2018,&rdquo said Thunberg. &ldquoToday that figure is already down to less than 350 gigatons.&rdquo



