-35657-106653.js'></script>
		<meta name="DCSext.MLC" content="/science/science-news" />
	<meta name="DCSext.Category" content="science-news" />
							<meta name="WT.cg_s" content="science-news" />
						<meta name="DCSext.Channel" content="science" />
					<meta name="WT.cg_n" content="science" />
						<meta name="DCSext.Content_Type" content="Story" />
    <meta name="DCSext.Level" content="3" />
	<meta name="DCSext.author" content="Richard Gray" />
			<meta name="DCSext.articleFirstPublished" content="