http://www.washingtonpost.com/blogs/innovations/wp/2015/03/04/why-not-to-fear-the-impact-of-virtual-reality-goggles-on-your-long-term-health/
http://www.washingtonpost.com/blogs/innovations/wp/2015/03/04/why-not-to-fear-the-impact-of-virtual-reality-goggles-on-your-long-term-health/