午夜福利1000集合What is a聽鈥榥ormal鈥櫬爉emory slowdown, and when should I worry? Lapses in memory are a normal part of ageing but can also be signs of dementia. Here鈥檚 how to distinguish between typical brain ageing and cognitive decline Features
LifeSingle-celled organism with no brain is capable of Pavlovian learning A trumpet-shaped, single-celled organism seems able to predict one thing will follow another, hinting that such associative learning emerged long before multicellular nervous systems News