Sometimes you just have to take matters into your own hands. For starters, the home pregnancy test was just the beginning: Dr. Eugene Chan and professor Andrew Ellington examine the growth of home diagnostic tests for everything from HIV to cancer. Today, we all take the ability to express ourselves online for granted. But broadcasting our personal lives to the world comes with serious downsides. Justin Hall, one of the world's first bloggers, reflects on the last 20 years. Professor Roger Martin discusses how much the “talent economy” matters to Americans, and why it is in danger. Technology writer Clive Thompson has a commentary on multitasking. Plus, your mom would be proud – a chip that reminds you not to slouch.