A European Commission report has predicted that large parts of southern Europe could be turned into desert by global warming.
The report also said severe droughts could kill tens of thousands.
The Commission has said it wants to keep a lid on climate change and has set a target to limit the increase in temperatures to 2C.
To achieve that, EU countries need to cut their carbon dioxide emissions to 30 per cent below what they were 20 years ago.
But environmental groups say even that may not be enough to stop Europe’s worst climate nightmares becoming reality.