“Today’s global warming is unlike the last 2,000 years of climate shifts”
“Temperatures across 98 percent of Earth’s surface were hotter at the end of the 20th century than at any time in the previous 2,000 years.
“Such nearly universal warming occurred in lockstep across the planet. And it is unique to this current era, scientists report. There were other well-known cold and warm snaps in the past. They include the Little Ice Age and the Medieval Warm Period. Some people have cited these episodes as evidence that modern warming is nothing out of the ordinary. But those past periods were only regional, not worldwide, new research shows.
“Today’s warming is truly global. And nothing like it has been seen in the past 2,000 years. What’s more, temperatures are increasing now much faster than at any time in the last 2,000 years. These conclusions come from a trio of new papers. They examined temperature trends over the last 20 centuries years. The papers were published online July 24 in Nature and Nature Geoscience.”