Emily Judd

Sep 19, 2024 | science.org | Hyoungjun Ham |Emily Judd

The current extent of the Arctic ice cap is shown. The polar regions were ice-free for much of Earth’s history. What was Earth’s temperature tens to hundreds of millions of years ago? The planet has gone through different periods, some with extensive polar ice caps and others being completely ice-free. Estimating past global temperature is important for understanding the history of life on Earth, for predicting future climate, and more broadly, to inform the search for other habitable planets.

Sep 19, 2024 | science.org | Hyoungjun Ham |Emily Judd |Caroline Ash |Bianca Lopez

Introduction to Special IssueCaroline Ash, Bianca Lopez, [...] , Sacha Vignieri, and Brad Wible+1 authors fewerAuthors Info & AffiliationsBrown rats (Rattus norvegicus) live essentially everywhere that humans reside. Surprisingly little is known about their original habitat or ecology and evolution in the wild. PHOTO: CHARLIE HAMILTON JAMESThanks to humans, house mice and brown and black rats are now some of the few species on the planet that can be found almost everywhere.

Sep 19, 2024 | science.org | Christina Jackson |Zehao Zhang |Emily Judd |Jessica E. Tierney

Editor’s summaryUnderstanding how global mean surface temperature (GMST) has varied over the past half-billion years, a time in which evolutionary patterns of flora and fauna have had such an important influence on the evolution of climate, is essential for understanding the processes driving climate over that interval. Judd et al. present a record of GMST over the past 485 million years that they constructed by combining proxy data with climate modeling (see the Perspective by Mills).