The Gulf Stream does not appear to be slowing down, say US scientists who have used satellites to monitor tell-tale changes in the height of the sea. Confirming work by other scientists using different methodologies, they found dramatic short-term variability but no longer-term trend. A slow-down - dramatised in the movie The Day After Tomorrow - is projected by some models of climate change. The research is published in the journal Geophysical Research Letters. The stream is a key process in the climate of western Europe, bringing heat northwards from the tropics and keeping countries such as the UK 4-6C...