What is an El Niño and how could it cause the hottest year on record? – video

This year’s ‘super' El Niño currently heating up the planet has surpassed the highest temperature ever recorded for the phenomenon, several months before it has even reached its expected peak. But what exactly is an El Niño and how do they work? Matilda Boseley explains• Huge El Niño projected to cause 450,000 deaths in next six months Continue reading...