Spot the Difference

Lightning is 5 times hotter than the sun. Lighting can reach temperatures of 30,000 kelvins (53,540 degrees Fahrenheit). Compare that to the surface of the sun, 6,000 kelvins (10,340 degrees Fahrenheit).

Tide is responsible for more than a third of the liquid-detergent market. In fact, during the Great Recession in 2009, a survey found it was one of the top three brands people were unwilling to give up when money was tight. In some areas, it’s so coveted that it’s even a commonly stolen product for criminals to resell.

The first four-way traffic signal that resembles what we use today was installed in Cleveland, Ohio on August 5,1914. It only had red and green lights and was operated by a police officer. There had been other attempts to control traffic, but the signal in Cleveland was the first-ever successful traffic light.