De Ochtend
RT @ProfKAArmstrong: Does the Validity of the Article 50 Letter Depend Upon the Existence of a Formal ‘Decision’? brexittime.com/2018/02/16/doe… h…
RT @MIT: Physicists create new form of light mitsha.re/Ua7w30irPrw @MIT_Physics

Interesting twitter.com/MIT/status/964…