LIVE on #Periscope: Scientist does homework https://t.co/sbqP0lwP2D
LIVE on #Periscope: Scientist does homework https://t.co/sbqP0lwP2D
LIVE on #Periscope: Scientist does homework https://t.co/sbqP0lwP2D
— Grant Barrett (@GrantBarrett) July 7, 2015
http://twitter.com/GrantBarrett/status/618221073641836544
Posted July 6, 2015