Microsoft CEO Satya Nadella speaks at the Future Decoded conference in London on Nov. 10. The company hopes to create new social tools to increase productivity in and out of the workplace. Kevin Coombs/Reuters /Landov hide caption

itoggle caption Kevin Coombs/Reuters /Landov

Workplace drug testing for marijuana may need updating in light of changing laws, a case before the Colorado Supreme Court suggests. Kai-Huei Yau/MCT/Landov hide caption

itoggle caption Kai-Huei Yau/MCT/Landov

Does she really think you're funny, or is she just being polite? Jon Feingersh/Getty/Getty Images/Blend Images RM hide caption

itoggle caption Jon Feingersh/Getty/Getty Images/Blend Images RM