 Hello, welcome to the programme. This is NewsHour from the BBC World Service. I'm Paul Henley and this is coming to you live from London. Hurricane Beryl, currently sweeping westwards across the Caribbean towards Jamaica, is attracting any number of superlatives. It's already the first storm since US records began to reach Category 4 level in June. It's the earliest to make Category 5 in July and it's a clear symptom, according to climate scientists, of a warming world.