Science envoy resigns over Trump – with a letter spelling out 'impeach'

State department’s Daniel Kammen quits with note calling out Charlottesville and Paris accord – and a hidden message in the first letters of each paragraph One of the US state department’s three science envoys publicly resigned on Wednesday, the latest in a wave of defections over Donald Trump’s response to a white nationalist rally in Charlottesville, Virginia.Daniel Kammen, a professor at the University of California, Berkeley, said in a letter posted on his Twitter acc