Global warming is partly to blame for the increasing intensity and frequency of massive wildfires in the American West, according to one expert, who says more than half of the region’s forests could be claimed by fire in the next century.

Tom Swetnam, a leading fire ecologist at the University of Arizona, told CBS’s 60 Minutes that a temperature increase in the West of just one degree had contributed to a four-fold increase in fires in the area.

As central banks continue to splash their cash over the system, so far to little effect, Ambrose Evans-Pritchard argues things are rapidly spiralling out of their control

Twenty billion dollars here, $20bn there, and a lush half-trillion from the European Central Bank at give-away rates for Christmas. Buckets of liquidity are being splashed over the North Atlantic banking system, so far with meagre or fleeting effects.

As the credit paralysis stretches through its fifth month, a chorus of economists has begun to warn that the world’s central banks are fighting the wrong war, and perhaps risk a policy error of epochal proportions.

The Federal Communications Commission narrowly approved on Tuesday a loosening of media ownership restrictions in the 20 biggest U.S. cities, despite objections from consumer groups and a threat by some U.S. senators to revoke the action.

The FCC voted 3-2, along party lines, to ease the 32-year-old ban on ownership of a newspaper and broadcast outlet in a single market.

In an “unforeseen and unprecedented” shift, the world food supply is dwindling rapidly and food prices are soaring to historic levels, the top food and agriculture official of the United Nations warned Monday.

The changes created “a very serious risk that fewer people will be able to get food,” particularly in the developing world, said Jacques Diouf, head of the UN Food and Agriculture Organization.

The agency’s food price index rose by more than 40 percent this year, compared with 9 percent the year before - a rate that was already unacceptable, he said. New figures show that the total cost of foodstuffs imported by the neediest countries rose 25 percent, to $107 million, in the last year.

A judge declared a mistrial on Thursday for six men accused of plotting to blow up America’s tallest skyscraper, Chicago’s Sears Tower, after a jury failed to reach verdicts on them but acquitted one other man.

Defense lawyers dismissed the charges as “nonsense” and said the entire plot was orchestrated by paid FBI informants.