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"it was probably an engineer who created the wheel, and you know an engineer was instrumental in erecting the Pyramids. Unfortunately, no record exists of stone age engineers, but here is a list of 10 Engineers Who Changed the Course of History."

"For decades, pioneer aviator Amelia Earhart was said to have "disappeared" over the Pacific on her quest to circle the globe along a 29,000-mile equatorial route. Now, new information gives a clearer picture of what happened 75 years ago to Ms. Earhart and her navigator Fred Noonan, where they came down and how they likely survived - for a while, at least - as castaways on a remote island, catching rainwater and eating fish, shellfish, and turtles to survive."

"If Stephen Hawking could talk with Albert Einstein, what would he say? "I would ask him why he didn't believe in black holes," says Hawking in this video from Time magazine. "The field equations of his General Theory of Relativity implied that a large star or cloud of gas would collapse in on itself and form a black hole."

"The video of the very first moon landing of the apollo 11 mission in 1969! Neil Armstrong was the first man to set foot on the moon with his now legenday words "One small step for man, a giant leap for mankind." This is a truly amazing video and it was in 1969!!! If you think about it, you have orders of magnitude more processing power in your mobile phone than they did in the whole space craft!! Incredible!"

"On May 5, 1961, only 23 days after Yuri A. Gagarin of the Soviet Union became the first man in space, Shepard was launched at 9:34am EST aboard the spacecraft he named Freedom 7 (MR-7) powered by a Redstone booster (MR-3).19 He was launched suborbitally to an altitude of over 116 miles, 303 statute miles down range from Cape Canaveral. His 15 minute 28 second flight achieved a velocity of 5,134 miles per hour and pulled a maximum of 11G's.20 Freedom 7 splashed down in the Atlantic Ocean where the aircraft carrier Lake Champlain awaited his arrival."

"On May 5, 1961, in the Freedom 7 spacecraft, he was launched by a Redstone vehicle on a ballistic trajectory suborbital flight--a flight which carried him to an altitude of 116 statute miles and to a landing point 302 statute miles down the Atlantic Missile Range."

"But Edison's greatest legacy may be as a founder of modern innovation, the process of turning an invention idea into a fully realized and patented commercial product. His early knack for entrepreneurial success gave him the wealth and investor backing to transform small inventor's workshops into the huge research-and-development laboratories of today. He even helped found U.S. military labs such as the Naval Research Laboratory."

"20th-century mathematical genius Amalie Noether. Emmy Noether's theorem united two pillars of physics: symmetry in nature and the universal laws of conservation. Albert Einstein called her the most "significant" and "creative" female mathematician of all time, and others of her contemporaries were inclined to drop the modification by sex. She invented a theorem that united with magisterial concision two conceptual pillars of physics: symmetry in nature and the universal laws of conservation"

"Lawrence Krauss gives a talk on our current picture of the universe, how it will end, and how it could have come from nothing. Krauss is the author of many bestselling books on Physics and Cosmology, including "The Physics of Star Trek.""

"find an amazing collection of scientists who are busy posting links as well as their own thoughts on a wide range of topics. No matter if your interest is in chemistry, physics, Earth sciences, or a more general appreciation of science, you will find Twitter feeds to fill you need for more science."

"The first invention of man is said to be a primitive tool which consisted of a split stone and served a wide range of purposes. After this basic tool, man prepared the hand axe, knife, and many other tools and instruments. All these discoveries and inventions led to the evolution of human civilization. "

""I want you to share my excitement at the discoveries, past and present, which have revolutionized the way we think. From the Big Bang to black holes, from dark matter to a possible Big Crunch, our image of the universe today is full of strange sounding ideas, and remarkable truths. The story of how we arrived at this picture is the story of learning to understand what we see." "

"These short videos, aimed at students aged 11-19, are produced in collaboration with leading chemical companies and document views of scientists passionate about the impact they are having on the real world. "

"Day four: Austin to Miami First, have a definite, clear practical ideal; a goal, an objective. Second, have the necessary means to achieve your ends; wisdom, money, materials, and methods. Third, adjust all your means to that end." - Aristotle"

"Amelia Rose Earhart says she "knew" after taking a first flight lesson in 2004 that she and her famous ancestor had more than a name in common. Now a private pilot training for an instrument rating, Earhart launched Dec. 26 on the first legs of a flight designed to recreate some of the milestones that led up to Amelia Mary Earhart's 1937 attempt to encircle the globe. "

"Meet the Aviation Professionals Building & Flying Our Giant Paper Airplane"

"biographical information on the astronauts. These biographies are prepared by the Astronaut Office of the Johnson Space Center and are provided through the Internet as a public service to the World Wide Web community. "

"Fleming was a Scottish bacteriologist and Nobel Prize winner, best known for his discovery of penicillin"

Arthur "Kit" Murray, the test pilot who in 1954 became the first pilot to fly above 90,000 feet, and see Earth's curvature in flight in a Bell X-1A,

Inspirational story about a remarkable young women pilot