NEW evidence has cast doubt on claims that the world’s ice-caps are melting, it emerged last night.

Satellite data shows that concerns over the levels of sea ice may have been premature.

It was feared that the polar caps were vanishing because of the effects of global warming.

But figures from the respected US National Oceanic and Atmospheric Administration show that almost all the “lost” ice has come back.

Ice levels which had shrunk from 13million sq km in January 2007 to just four million in October, are almost back to their original levels.

Figures show that there is nearly a third more ice in Antarctica than is usual for the time of year.

The data flies in the face of many current thinkers and will be seized on by climate change sceptics who deny that the world is undergoing global warming.

A photograph of polar bears clinging on to a melting iceberg has become one of the most enduring images in the campaign against climate change.

It was used by former US Vice President Al Gore during his Inconvenient Truth lectures about mankind’s impact on the world. But scientists say the northern hemisphere has endured its coldest winter in decades.

They add that snow cover across the area is at its greatest since 1966.

The one exception is Western Europe, which has – until the weekend when temperatures plunged to as low as -10C in some places – been basking in unseasonably warm weather. The UK has reported one of its warmest winters on record.