From Wednesday's Globe and Mail

Humans have already caused so much damage to the atmosphere that the effects of global warming will last for more than 1,000 years, according to a summary of a climate-change report being prepared by the world's leading scientists.

The draft, seen by The Globe and Mail yesterday, also says evidence the world is heating up is now so strong it is “unequivocal” and predicts more frequent heat waves, droughts and rain storms, as well as more violent typhoons and hurricanes. It concludes the higher temperatures observed during the past 50 years are so dramatically different from anything in the climate record that the last half-century period was likely the hottest in at least the past 1,300 years.

Moreover, 11 of the past 12 years rank among the warmest since humans began taking accurate temperature measurements in the 1850s, a record of extremes so pronounced it is unlikely to be due to chance.

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