article_snippet.sent: Scroll down for video .
article_snippet.sent: The professor added: ‘The question will be how much of The question we can actually get out and whether The question is commercially and technologically viable to do so.
article_snippet.sent: It is extremely difficult with a very low recovery rate.
article_snippet.sent: This is potentially interesting
article_snippet.sent: but I wouldn’t attribute any value yet.
article_snippet.sent: may not receive a penny of the profits.
highlights_snippet.sent: But some experts warn the site will be difficult to exploit .