Spiegel: For the first time ever in continental Europe, carbon dioxide is set to be pumped underground. Scientists working in the town of Ketzin, just outside of Berlin, want to begin pumping quantities of the greenhouse gas underground this week in order to determine whether it can be stored safely in sandstone deposits during a test phase that will continue through 2009. Similar projects are underway in Canada, Australia and off the coast of Norway. Scientists are hoping that the efforts to …