Scientists have ample evidence to prove the Earth is a sphere. But some social media users claim to have devised an experiment showing the earth is flat. The post shows a green laser beam projected ...

Award-winning videographer Dana Conroy devoted three years and her own funds to produce a documentary on the risks of laser refractive surgery after undergoing the procedure herself. Videographer Dana ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. Mean manifest refraction spherical equivalent improved ...