That new data should help researchers make better models of Earth’s past and future climate. This is a number that so many modelers have wanted,” says lead study author Kimberley Mayfield, with a laugh. The additional data should lead to better models of Earth’s past climate, says Matthew Charette, a senior scientist at Woods Hole Oceanographic Institution and co-author on the paper. He says improving models of the past should help us better understand the current changes in Earth’s climate. “We want to improve climate models for reasons that I believe are obvious at this point,” says Mayfield.