Imagine the Earth pulling everything it is made up of, all of its mass, towards its centre. This happens evenly all over the Earth, causing it to take on a round shape.
Forests and savannas are expected to be strongly affected in the coming decades by changing rainfall patterns. But land use will also have a major impact.
The global tropical climate zone is expanding. At the current rate, by 2100 its edge will stretch from Sydney to Perth.
The tropics are expanding at an unprecedented rate. This will have massive implications for societies, economies and the natural world.