A strengthening El Niño over record-hot oceans could reshape weather worldwide. Here’s what it means, how it affects us, and what we can still do.

Scientists are raising alarms over the planet's warming oceans, which — coupled with a strong El Niño — could increase temperatures for land dwellers in the coming weeks.

Matthew England and Alex Sen Gupta of UNSW Sydney and Alistair Hobday of CSIRO discuss how the new El Niño is set to bring about unprecedented heatwaves and extreme weather.