IN THIS ISSUE

Articles

• Defining the Danger
  Two mosquito-borne viruses are on the rise in the United States
• Fun with Light and Matter
  Ultrathin, ultra-adaptable metasurface devices revolutionize electromagnetic signal control
• Out of Thin Air
  How lightning starts and what it can be used for.
• Frenzied Flow
  Shocks, whirls, and the indispensable science of turbulence

Spotlights

• Dark Matter Gets a Little Darker
  Dwarf galaxies surrounding the Milky Way provide a hunting ground for dark matter
• Capturing Life in Motion
  Microscopes capture the three-dimensional movements of particles inside living cells
• Better Data Just Can't Wait
  Making the most of limited time on a particle accelerator or other high-end experimental facility

In Their Own Words

• Tiny Organisms, Big Questions
  Insight into the career of a scientist who digs microbes