Acid rain cycle Acid rain is a serious environmental problem that affects large parts of the United States and…

Moveable type and plate Paper, second century – “The idea of stamping images is natural if you have paper, but…

Water slide National Geographic takes a high-level look at the physics behind waterslides. A lot of science goes into providing…

Woman with wheelbarrow The lever, third millennium b.c. – The Egyptians had not yet discovered the wheel when they built…

X-48B Blended Wing Body aircraft during test flight Aeronautics is the study of the science of flight. Aeronautics is the…

Green roof Urban rooftop agriculture may be the best solution to feeding people who live in cities. That garden is…

Animation sequence of a horse in motion. Muybridge Photography, early 19th century – Changed journalism, art, culture, and how we…

STS-133 International Space Station after undocking 5 International Space Station – a habitable artificial satellite in low Earth orbit. Orbit…

U.S. Patent number 872,795, issue date 1907-12-03 Vacuum flask (or Dewar flask or Thermos) has the remarkable capacity to hold…

Sperm whale ocean engineering – covers everything from oceanographic surveying to naval architecture to water sports equipment design to animal…

  Surfaces tension – The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension. The…

Electronic toll collection (ETC) – To eliminate the delay on toll roads by collecting tolls electronically, ETC determines whether the…

  Wave energy generator – a floating, flexible, modular and massively scalable wave power generation idea under testing in Scotland…

  Basics of solar efficiency for using solar power for providing electricity for home use Solar batteries – Solar batteries…

Garrett Morgan — The Gas Mask, Hair Straightener, Traffic Signal and More Garrett Morgan only had an elementary school education,…