- One-third of humanity cannot see the Milky Way at night http://advances.sciencemag.org/content/2/6/e1600377 5 comments science
- One-third of humanity is unable to see the Milky Way at night, 99% of the US and European population live under light-polluted skies https://www.aaas.org/news/one-third-people-cannot-see-milky-way 43 comments environment