Preprints
Filtering by Subject: Environmental Studies
Ratcheting up ambition in climate policy
Published: 2017-11-11
Subjects: Climate, Environmental Studies, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics, Social and Behavioral Sciences
The historic Paris Agreement aims to constrain the peak increase in global mean temperature to 1.5 °C, or at least well below 2 °C. Every country has committed to device their own “nationally determined contributions” towards this target. These contributions are only proscribed for the coming 10-15 years with a regular reassessment of them against the global target. Here we use a global [...]
Pastoralism may have delayed the end of the green Sahara
Published: 2017-11-06
Subjects: Earth Sciences, Environmental Studies, Geology, Physical Sciences and Mathematics, Social and Behavioral Sciences
The benefits of pastoralism for marginal, arid environments are often not appreciated. One notable past example of the human response to encroaching desertification comes from the regional climate deterioration after the most recent African Humid Period, which ended around 5,500 years ago. Recent evidence points to a population expansion in northern Africa prior to this, associated with the [...]