HumansYou can recognise around 5000 faces, from family to celebrities For much of human evolution our ancestors may have encountered only a few hundred people in their lives – but we can each recall about 5000 distinct faces ¿ìè¶ÌÊÓÆµ
HealthMultiple sclerosis drug is first to dramatically cut brain shrinkage An experimental treatment can nearly halve the loss of brain tissue in people who have the worst forms of multiple sclerosis, for which there are few treatments ¿ìè¶ÌÊÓÆµ