Independent (UK): It was worthy. It was green. In fact, it was carbon-neutral. But it was a tad on the slow side. The Climate Express, a special one-off train put together by the combined efforts of Europe’s railways, took environmental campaigners from all over the continent to Copenhagen at the weekend, for the UN climate conference which begins this morning — and your correspondent joined them. There is no high-speed continuous rail link to the Danish capital from Brussels, where the journey …