These Mindbending Optical Illusions Will Break Your Brain

The More You Know

• A German and British aeroplane shot each other down in Norway during WWII. The crew met and helped each other survive. Two of them later visited each other many years after the war was over as friends.
• You spend about 10% of the time you're awake blinking.
• Grasshopper Mice have evolved to turn scorpion venom into a pain-killer. They now prey on scorpions.
• The glass winged butterfly lacks colored scales, which makes its wings transparent and helps it avoid predators.