| Science A Go Go: The mid-Permian transition from ice age to an ice-free planet was marked by dips and rises in carbon dioxide and extreme swings in climate, according to University of California, Davis (UC) researchers writing in Science. During the mid-Permian, 300 million years ago, much of the southern hemisphere was covered in thick ice sheets and floating pack ice likely covered the northern polar ocean. But forty million years later, all the ice was gone and the climate hot and dry with sparse ... |
