Independent (UK): The Gulf Stream does not appear to be slowing down, according to scientists who have used satellites to monitor changes in the height of the sea. The stream brings heat northwards from the tropics and is a key factor in the climate of western Europe. Some models of climate change predict a slow down. Although the scientists, from Nasa’s Jet Propulsion Laboratory in California, noticed dramatic short-term variability, there was no longer-term trend, they said. In fact since 1993 the …