Kendrick Lamar leads the pack with nine nominations, followed by Lady Gaga and Bad Bunny.

The scathing pop-rock track sees Duff criticize an ex-lover for moving on with a younger woman who's fallen for his "Scorpio touch."

A peek inside some leading research labs shows how scientists-turned-detectives are painstakingly decoding what causes autoimmune diseases and how to stop the immune system from attacking you instead of protecting you. Researchers use laser-powered machinery and brightly colored fluorescent dyes to tell rogue cells from normal ones. Take Type 1 diabetes, caused when cells in the pancreas that produce insulin are gradually killed off by rogue T cells.