Fueled by industrial greenhouse gas emissions, Earth's
climate warmed more between 1971 and 2000 than during any other three-decade
interval in the last 1,400 years, according to new regional temperature
reconstructions covering all seven continents.
This period of manmade global warming, which continues today, reversed a
natural cooling trend that lasted several hundred years, according to results
published in the journal Nature Geoscience by 78 scientists from 24 nations
analyzing climate data from tree rings, pollen, cave formations, ice cores,
lake and ocean sediments, and historical records from around the world