<div dir="ltr">For those who argue against light-light interactions<br><div><br><a href="http://physicsworld.com/cws/article/news/2017/aug/18/light-is-seen-to-scatter-off-light">http://physicsworld.com/cws/article/news/2017/aug/18/light-is-seen-to-scatter-off-light</a><br></div></div>