Mariam Atef

Right beneath bustling cities and remote landscapes, entire networks of underground bunkers are carved out of rock and concrete, sealed off from public view. Only a select few know what really exists down there (hint: these top-secret locations hide more than just people). Read on to uncover 10 underground bunkers you were never meant to see, from declassified government facilities and Nazi hideouts to Cold War relics and luxury “doomsday” billionaire bunkers.

Chances are, you’ve had days when you feel unhappy, anxious, or unmotivated. Don't let these emotions get the best of you; there are science-backed methods that can turn around a bad day in an instant. These easy actions are based on the science behind how tiny, daily actions can trigger neurochemical mood boosts. That said, we've compiled a list of 15 instantly actionable mood booster tips supported by solid research.