Pecora immediately broadened the Senate investigation from short-selling to all Wall Street behaviour, starting with City Bank.

ECONOMIST: How Ferdinand Pecora won the blame game

The mathematics of gas molecules are well understood, and provide a surprisingly good starting point for analysing the behaviour of cars.

ECONOMIST: Traffic management: Desynchronised | The

In a sign that the movement itself is starting to worry about its own behaviour, Mullah Omar, the one-eyed Taliban chief, based over the border in Pakistan, has just issued a rare statement threatening rogue insurgents with sharia justice if they kill or injure civilians.

ECONOMIST: Afghanistan and the Taliban

Professor McGrew said the team was starting to see new patterns of chimpanzee behaviour emerging.

BBC: Cultural habits of chimps

Research presented at the AAAS in Boston is starting to unravel the mysteries of shark behaviour, and how they might best be protected.

BBC: RELATED BBC SITES

Dr Jon Goldin, an ADHD expert at Great Ormond Street Hospital, agreed that treatment should be a combination of drugs - starting at low doses - with behavioural and psycho-social interventions, such as giving praise for good behaviour.

BBC: 'A toddler trapped in a teen's body'