Health Calorie boost may explain why adults evolved ability to digest milk Why some people evolved the ability to digest milk in adulthood hasn't been clear, but the extra calories that young children got may have been key NewsSubscriber-only
Comment The Age of Cats review: How our furry friends evolved, and what’s next CultureSubscriber-only
Life Wild African elephants may have domesticated themselves African savannah elephants play, care for their young and show social behaviours associated with domestic animals, despite never being domesticated by humans NewsFree