Experts agree that global heating of 4°C by 2100 is a real possibility. The effects of such a rise will be extreme and require a drastic shift in the way we live.
sea level rise
The warming of the Southern Ocean is resulting in glaciers sliding into the sea increasingly rapidly, with ice now being lost five times faster than in the 1990s. The West Antarctic ice sheet was stable in 1992 but up to a quarter of its expanse is now thinning. More than 100 metres of ice thickness has been lost in the worst-hit places.
Cyclone Idai, the tropical storm that ravaged Mozambique, Malawi and Zimbabwe, has been described as the worst weather-related disaster to hit the southern hemisphere, and the UN says more than 2 million people have been affected. Storm-surge floods of up to six meters have caused widespread devastation.