Spiegel: Just as the US gets a new president who promises to reverse years of climate change neglect, American environmental experts worry that Europe’s resolve on climate change is weakening. Merkel’s recent about-face is especially alarming. It was a telling moment. Normally these days, when President-elect Barack Obama appears before the press, even his designated cabinet secretaries arrange themselves dutifully in a row behind him. But when Obama met with Al Gore in Chicago on Tuesday …