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A red bicycle is chained to a bridge in Amsterdam, the Netherlands.

Who invented the bicycle?

By Elizabeth Peterson published

Reference The bicycle has a complicated past fraught with controversy and misinformation.

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Engineering is the application of science and math to solve problems.

What is engineering?

By Jim Lucas published

Reference Engineering is the application of science and math to solve problems. Here we explore the different types of engineering.

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simple machines, wheel and axle

6 simple machines: Making work easier

By Jim Lucas, Scott Dutfield published

Reference Humans have invented six devices that combine to make work easier. These six simple machines are the wheel and axle, the lever, the inclined plane, the pulley, the screw and the wedge.

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World's longest bridge

What's the world's longest bridge?

By Katharine Gammon, Ailsa Harvey published

Reference Explore the incredible engineering behind the longest bridges in the world

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General Atomics, Blue Origin and Lockheed Martin each received contracts for the Demonstration Rocket for Agile Cislunar Operations (DRACO) program's first phase.

US military picks 3 companies to test nuclear propulsion above low-Earth orbit

By Elizabeth Howell published

The Defense Advanced Research Projects Agency (DARPA) has picked three big space companies for the first phase of a larger project to test nuclear propulsion above low Earth orbit by 2025.

Engineering
Woman sending fax

How do fax machines work?

By Dani Leviss published

The first fax machine used telegraph lines and was patented 33 years before Alexander Graham Bell's famous first phone call.

Engineering
An illustration of Earth's magnetic field.

'Vigorous' magnetic field oddity spotted over South Atlantic

By Stephanie Pappas published

European satellites are investigating the development of two distinct weak points within the South Atlantic Anomaly of Earth's magnetic field.

Engineering
An artist's concept of DARPA's Glide Breaker anti-hypersonic-weapon system.

DARPA's hypersonic 'Glide Breaker' could blast missile threats out of the sky

By Elizabeth Howell published

Aerojet Rocketdyne will develop "enabling technologies" for DARPA's Glide Breaker program under a newly announced contract, which is worth up to $19.6 million.

Engineering
Two CubeSats, part of a constellation built and operated by Planet Labs Inc. to take images of Earth, were launched from the International Space Station on May 17, 2016.

Hackers could shut down satellites — or turn them into weapons

By William Akoto published

Engineering
Boeing's Phantom Express XS-1 space plane design is shown in launch position in this artist's concept. The autonomous spacecraft is designed to launch vertically, deploy a second stage payload into orbit and return to Earth for a runway landing.

DARPA scraps XS-1 military space plane project after Boeing drops out

By Mike Wall published

Boeing has withdrawn from Experimental Spaceplane, a U.S. Defense Advanced Research Projects Agency (DARPA) program designed to increase the nation's access to space.

Engineering
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