LONDON (AP) -- Ancient tools found in Britain show that humans lived in northern Europe 200,000 years earlier than previously thought, at a time when the climate was warm enough for lions, elephants and saber tooth tigers to also roam what is now England. Scientists said Wednesday that 32 black flint artifacts, found in river sediments in Pakefield in eastern England, date back 700,000 years and represent the earliest unequivocal evidence of human presence north of the Alps. Scientists had long held that humans had not migrated north from the relatively warm climates of the Mediterranean region until half a...