▽Science and technology: news and analysis | The Economist ●01/10 01:01 Well informedDoes melatonin work for jet lag?It can help. But it depends where you’re goingI can do it with a distributed heartTraining AI models might not need enormous data centresEventually, models could be trained without any dedicated hardware at allReturn of the House of WisdomHow the Gulf’s rulers want to harness the power of scienceA stronger R&D base, they hope, will transform the