When researcher Nicholas Tiller began to feed health questions into chatbots as a test, he expected some imperfections — but not this level of failure.
People did not always look down their noses at pigeons. Over the centuries, the domesticated birds played important roles as sources of food and fertiliser, as messengers and even as beloved companions.
Scientists believe a common medicine, already prescribed to millions, could also provide the benefits of intense exercise sessions without actually exercising.