Why would a much-liked nurse, one so respected she was cast as the smiling face of her hospital's PR campaign, kill newborns placed in her care? The case of neonatal specialist Lucy Letby, this week convicted in a UK court of systematically murdering seven infants, defies comprehension. But there is one possible explanation, the Nightingale Syndrome, as clinical psychiatrist Robert Kaplan explains

The German strategist was clear: an entrenched defender has a 3:1 advantage over the attacker. After this, two outcomes are likely. If the defending force is sufficiently coherent, it will be able to counter-attack and overwhelm the enemy. Alternately, if they cannot maintain this, then the attacking force wins. It remains unclear which fate awaits Ukraine's invaders

Fearing, encountering and experiencing madness of a family beset by various manifestations of derangement, the artist was able to tap and use these immersive experiences to inspire and guide his work. This was the behaviour of genius, not a lunatic

They have been told to shut up by the American Psychiatric Association, which has rejected the "diagnosis" of Hillary-supporting mental health "professionals" who swear that Donald Trump is a loony and must be removed from office. Something like that happened in Bavaria and didn't end well

Half a century ago author Stanley Crawford nailed the future with a now all-but-forgotten book's take on what has become mundane: everyone lost in their mobile phones, every freeway feeding into supermarkets, service stations, burger joints. Between guffaws, you might recognise our modern world

Ira Einhorn revelled in his role as a charismatic guru. Long-haired and white-robed, he was one of Earth Day's original organisers and a fixture on university campuses, toasted for his wit and insight with copious cups of herbal tea. Oh, and he was a killer as well