#28 Why can’t we see color at night?
I learned this today. We can’t see colors in the dark because our eyes detect light waves in two different ways. In […]
#27 Why would we have evolved with our esophagus and windpipe so close together that we can choke?
I learned this today. Why would we evolve with a throat and windpipe that are so close together we can choke? In […]
#26 How did the invention of the horse collar change society?
I learned this today. The horse collar changed society in a huge way and many things we take for granted now came […]
#25 Why is Wall Street called Wall Street?
I learned this today. Why is Wall Street called “Wall Street” and why has it become a financial center? There are two […]
#24 What causes water mirages and heat hazes?
I learned this today. What causes water mirages and heat hazes? Water mirages and heat hazes are caused because light travels at […]
#23 How do electric eels make electricity
I learned this today. An electric eel produces electricity in the same way that a battery does. Electric eels usually grow to […]
#22 Why was the piano invented?
I learned this today. The piano is only 300 years old and many famous composers that we know composed for the harpsichord, […]
#21 How do TV remote controllers work?
I learned this today. Most TV remote controls operate by sending binary signals to the TV using infrared light. The remote controller […]
#20 Do cats blink?
I learned this today. Cats appear never to blink, but they actually blink with a third eyelid, a nictitating membrane, which is […]
#19 Are hurricanes and tornados the same thing?
I learned this today. Hurricanes and tornados are not the same thing. Hurricanes, typhoons. and cyclones always form over the sea. Incidentally, […]