Subscribe

Science Earth's cooling came to sudden halt in 1900, study shows

An international study used tree rings and pollen to build the first record of global climate change, continent by continent, over 2,000 years.

Courtesy Thomas Beer/AP/File

A reconstruction of 2,000 years of global temperatures shows that a long-term decline in Earth's temperatures ended abruptly about 1900, replaced by a warming trend that has continued despite the persistence into the 20th century of the factors driving the cooling, according to a new study.