The BBC has done a good job highlighting El Niño - a climate phenomenon identified by warmer-than-average sea surface temperatures in the central + eastern tropical Pacific Ocean. It disrupts normal weather patterns globally, often leading to increased rainfall in some regions & droughts in others.
Prepare for El Niño, UN warns. It could be the strongest in decades - BBC News
Scientists fear the combined effects of El Niño and human-caused climate change could reshape weather around the world
bbc.co.uk