cript language="Javascript" type="text/javascript" src="/template/ver1-0/js/poll.js"></script>

<script type="text/javascript">
		var _sf_async_config={uid:22437,domain:"telegraph.co.uk"};

		
			_sf_async_config.sections = "News, Science, Science News, Health, Health News, Richard Gray";
		
			_sf_async_config.authors = "Richard Gray";
		

		(function(){
			function loadChartbeat() {
			window._sf_endpt=(new Date()).getTime();
			var e = document.createElement('script');
			e.setAttribute('language', 'java