How has Earth’s climate changed in the past 2,000 years?
In a recent progress article in Nature Geoscience, this issue is tackled head on and here, in the inaugural NPG journal club, the worlds of Geoscience and Google+ met to discuss the article and this big climate question.
Read the paper here: http://www.nature.com/ngeo/journal/v6/n5/full/ngeo1797.html