Ice is the name given to any one of the 15 known crystalline solid phases of water. It can appear … More

With proper design and construction, the damage to buildings by hurricane and tornado forces can be greatly reduced. Natural disasters … More

Men have dreamed of flying under their own power for thousands of years. For Paul MacCready, an aerospace engineer with … More

Housing House – building or structure that functions as a habitat for humans or other creatures. The term house includes … More

Imagine Mars Project (video 25:56) – overview of what it would be like to live on Mars and some of … More

Got an hour? Write your first computer program (video 1:30) introduction. Learn the basic concepts of Computer Science with drag … More

How we got to now – six innovations include: glass, time, clean, light, sound, and cold. Time (video 5:39) – … More

Hovercraft also known as an air-cushion vehicle or ACV,- a craft capable of traveling over land, water, mud or ice … More

The Hubble Space Telescope, one of the largest and most complex satellites ever built, was the result of over 20 … More

How a CAR works – explains how cars work, from the basics, to more technical guides and illustrations on each … More

HVAC Heating Cooling Air conditioning – invented 1902 – The human body can work efficiently only in a narrow range … More

Helicopter – lift and thrust are supplied by rotors. This allows the helicopter to take off and land vertically, to … More