A 4C rise in global average temperatures would force humans away from equatorial regions

The vast majority of humanity will live in high-latitude areas, where agriculture will be possible

Two-thirds of the glaciers that feed many of Asia’s rivers will be lost

Saharan deserts will expand into southern and central Europe

Some of the only habitable parts of the southern hemisphere – likely to be very densely populated

High humidity across many tropical regions will render them uninhabitable. To the north and south will lie belts of inhospitable desert

Canada, Siberia, Scandinavia, and Alaska

The vast majority of humanity will live in high-latitude areas, where agriculture will be possible

Southern Europe

Saharan deserts will expand into southern and central Europe

Hindu Kush, Karakoram and Himalayas

Two-thirds of the glaciers that feed many of Asia’s rivers will be lost

New Zealand, Tasmania, Western Antarctica and Patagonia

Some of the only habitable parts of the southern hemisphere – likely to be very densely populated

Equatorial belt

High humidity causing heat stress across tropical regions will render them uninhabitable for much of the year. To the north and south will lie belts of inhospitable desert

Oceanic dead zones

Coral reefs, shellfish and plankton will be wiped out by rising acidity and algae starving the oceans of oxygen. Without prey, larger sea life will decline rapidly