More chaotic weather conditions are ahead. Last year, heatwaves caused the world's rivers to reach their lowest levels in 33 years, while other parts of the planet were hit by floods.
It is warmer than usual in the North Sea and the North Atlantic. It could be about one of the worst marine heat waves ever. If the temperatures stay the same, it can mean mass death for fish, algae, seaweed and mussels.
Get ready - the little guy is coming. The UN's call is about El Niño, a powerful weather phenomenon that can have devastating effects on an already warm planet.