'Half of amphibians' under threat

Loads of frogs and toads living in Europe could have died out within the next 42 years, scientists are warning.

Experts say more than half of Europe's amphibians are at risk because climate change, caused by pollution, is making it harder for them to survive.

Amphibians are cold-blooded animals. They spend most of their lives in water and the rest of it on land.

They usually have four legs, so as well as frogs and toads, newts and salamanders could also be affected.

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Sir David Attenborough is backing a campaign to save amphibians

Disease is another big problem for amphibians, wiping out thousands in the UK every year.

Numbers of common toads have already fallen.

Now wildlife expert Sir David Attenborough is backing a campaign by the Zoological Society of London to try to save as many of the creatures from extinction as possible.

He said: "Amphibians are the lifeblood of many environments, playing key roles in the functions of ecosystems, and it is both extraordinary and terrifying that in just a few decades the world could lose half of all these species."