A second Donald Trump presidency could “set the Earth on fire”. RadarOnline.com can reveal the five ways scientists claim the climate change-denying candidate would have a devastating impact on the world if he wins re-election in November. Scientists have long warned about climate change while urging politicians and citizens to take action before it’s too late. Now, with the presidential election mere days away, climate experts made their most dramatic case yet against Trump. While campaigning for a second term, Trump has repeatedly branded climate change a “hoax” and “one of the great scams o…