Extreme heatwaves that previously only struck once every 50 years are now expected to happen once per decade because of global warming, while downpours and droughts have also become more frequent, a UN climate science report said on Monday.

The report found that we are already experiencing those effects of climate change, as the planet has surpassed more than one degree Celsius in average warming. Heatwaves, droughts and torrential rains are only set to become more frequent and extreme as the earth warms further.

It is the first time that the UN Intergovernmental Panel on...