Latest Julia Pongratz Stories
When evaluating the historic contributions made by different countries to the greenhouse gasses found in Earth's atmosphere, calculations generally go back no further than the year 1840.
Carbon dioxide emissions from the burning of coal, oil, and gas have been increasing over the past decades, causing the Earth to get hotter and hotter.
Decisions by farmers to plant on productive land with little snow enhances the potential for reforestation to counteract global warming, concludes new research from Carnegie's Julia Pongratz and Ken Caldeira.
Genghis Khan and his Mongol hordes had an impact on the global carbon cycle as big as today's annual demand for gasoline.