I'm trying to find a way of buying this article, but can't :(.  New Scientist used to be one of my favorite online magazines...is my only option if I'm looking to continue reading it to subscribe to the dead tree version?<p>(If I'm the only one seeing this, it doesn't give me the full article, it prompts me to log in to view the rest. [I'm assuming the article is longer than 3 paragraphs])