I learned this today. The Nazca lines were made using wooden stakes and ropes to make them straight. Then the top layer of soil was removed. How the Nazca lines were made is an easier question to answer than why they were made. First of all, let’s look at what the Nazca lines actually are. […]
#273 How were the Nazca Lines made? Read More »
I learned this today. The Iron Age started because iron and steel reached the point where it was stronger than bronze, and the Bronze Age collapsed. The Iron Age is the third of the three-age history division of prehistory. It doesn’t have one starting point because it varies from region to region. The earliest start
#272 Why did the Iron Age start? Read More »
I learned this today. Pandas eat bamboo because it is such an abundant food source that they don’t need to fight over food or search for it. There is some argument over when pandas started eating bamboo. The general consensus is that they began to eat bamboo about 6 million years ago. Evidence for this
#271 Why do pandas eat bamboo? Read More »
I learned this today. The Tunguska event was probably a meteor air burst that exploded over Eastern Siberia on June 30th, 1908. Today, as of writing, it is the 114th anniversary of the Tunguska event. Early in the morning of Tuesday, June 30th, 1908, there was a bluish light almost as bright as the sun,
#270 What was the Tunguska event? Read More »
I learned this today. The first lawyers appeared in the Roman Empire in the time of Emperor Claudius who ruled from AD 41 to 54. In ancient time there was no such thing as lawyers. The law was discharged by the king, chief, or head of the group of people. As leaders became more powerful,
#269 When were the first lawyers? Read More »
I learned this today. Vitamins are organic compounds that our bodies cannot produce on their own but that we need to live. Vitamins are organic molecules that we need in small amounts. They all serve different purposes in our bodies. There are 13 different vitamins. They are A, B1, B2, B3, B5, B6, B7, B9,
#268 What are vitamins? Read More »
I learned this today. Rome became a republic because the last king of the Roman Kingdom was overthrown. The Kingdom of Rome was founded in 753 BC. There is no written evidence for this. It all comes from oral histories. All of the histories that we can look at were written when Rome had become
#267 Why did Rome become a republic? Read More »
I learned this today. Modern ice cream was invented in 1695. Nobody knows when ice cream itself was invented. Ice desserts aren’t possible without ice. Unless people live in a very cold country, before the invention of the refrigerator, the only way to have ice was with an icehouse. The first icehouses were introduced in
#266 Who invented ice cream? Read More »
I learned this today. A superfluid is a point where matter behaves like a fluid but has zero viscosity.A superfluid has no viscosity. That means it doesn’t have any friction and doesn’t lose energy. It appears to go against the laws of thermodynamics. If you stir a cup of coffee with a spoon and step
#265 What is a superfluid? Read More »
I learned this today. The aurora borealis are green, purple, pink, and blue because those are the colors given off when the different elements in the atmosphere are heated up. The aurora borealis is caused by electrically charged particles from space hitting the magnetic field in the upper atmosphere at a very high speed. The
#264 Why are the aurora borealis those colors? Read More »
