The health and environmental benefits of U.S. clean air policies extend to global climate.
Rainfall patterns in the Sahara during the six-thousand-year “Green Sahara” period have been revealed by analyzing marine sediments.
Geologist Alessio Rovere and Trinity Mensah-Senoo walk along a beach in Ghana gathering data that will be used to monitor coastal erosion.
A new study supplies the longest and most complete record of ancient plant life in much of what is now Ethiopia and Kenya, the assumed birthplace of humanity.
A new study finds that the Horn of Africa is drying at a rate that is both unusual in the context of the past 2,000 years and in step with human-influenced warming.