#225 What is the Kola borehole?
I learned this today. The Kola borehole is the deepest manmade borehole on Earth, and it is the deepest artificial point […]
#224 Why can animals run so fast?
I learned this today. Many animals can run quickly because they have four legs, run on their toes, and have bodies designed […]
#223 What did the Magna Carta do?
I learned this today. The Magna Carta promised the protection of church rights and the protection of the barons from King John […]
#222 How does a hydraulic system work?
I learned this today. Hydraulic machines work because a force applied at one point to an incompressible fluid is transmitted to another […]
#221 What is the difference between sonar and radar?
I learned this today. Radar works by using radio waves to work out the position of objects relative to the detector and […]
#220 Why did Hawai’i become a US state?
I learned this today. Hawai’i became a state in 1959, when 93% of Hawaiians voted in favor of it. People […]
#219 Why don’t deep sea fish get crushed by the pressure?
I learned this today. Deep sea fish can survive because they don’t breathe in the same way that we do. However, […]
#218 How deep can a submarine go?
I learned this today. The Trieste, a Swiss and Italian submarine reached a depth of 10,911m. This is the deepest point […]
#217 How does bulletproof glass work?
I learned this today. Bulletproof glass is made of two different types of laminated glass, one hard and one soft. Glass […]
#216 What is antimatter?
I learned this today. Antimatter is matter made up of antiparticles. An antiparticle and a particle have the same mass but […]