Regular use of drugs like Viagra, Cialis linked to 3 serious eye conditions: B.C. research

This Monday, Dec. 4, 2017 photo shows a tablet of Pfizer's Viagra, left, and the company's generic version, sildenafil citrate, at Pfizer Inc., headquarters in New York. (AP / Richard Drew) This Monday, Dec. 4, 2017 photo shows a tablet of Pfizer's Viagra, left, and the company's generic version, sildenafil citrate, at Pfizer Inc., headquarters in New York. (AP / Richard Drew)

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White 'replacement theory' fuels racist attacks

A racist ideology seeping from the internet's fringes into the mainstream is being investigated as a motivating factor in the supermarket shooting that killed 10 people in Buffalo, New York. Most of the victims were Black.