Engineering is the discipline of design and construction of mechanical devices, equipment, structures and public works systems. Topics include aircraft technologies, buildings, bridges, robotics and heavy machinery.

50 Years After '2001: A Space Odyssey,' How Close Are We to HAL 9000?

Printing With Sound: The Wave of the Future

Recycled Plastic Waste Creates Roads

The environment is truly a thing of beauty and should be protected whenever possible. What can we do to save the environment, and what new technology is available to help us?

Kiss Your Beer Goodbye if Climate Change Continues Unchecked

Tidal Bores Are Rare, Fast and Have Epic Waves

Why Don't More Cities Require Green Roofs?

We see the destruction that the Earth can unleash in the news on a regular basis. Here you can learn about hurricanes, tornadoes, earthquakes and other forces of nature.

Ice Crystals Cause Beautiful Noctilucent Clouds

Storm Surge, Not Wind, Is the Deadliest Part of a Hurricane

Quiz: Are You Prepared for the Next Disaster?

Do you know how common everyday items, such as mirrors, fireworks or sunglasses work? This collection of Innovation articles explores the workings of objects you may come into contact with on a regular basis.

Algae: Pond Scum or Food of the Future?

Robot Revolution: Coming to a Restaurant Near You

Who Was Rube Goldberg, and What Are His Contraptions?

From the smallest microbe to the largest mammal, Life Science explores the origins, evolution and expansion of life in all its forms. Explore a wide range of topics from biology to genetics and evolution.

Rare Groundcherry Could Soon Be Everywhere, Thanks to Gene Editing

Plants Evolve Scents and Colors to Attract Animals for Seed Dispersal

Interbreeding with Neanderthals Gave Humans Virus Protections

Explore the weapons and combat systems used by the armed services. A broad range of topics in the Military Channel includes tanks, aircraft, biological warfare and stealth technologies.

Half the World's Gun-related Deaths Occur in Just 6 Countries, Including the U.S.

Recovered 'Lost Squadron' Plane Leads to New Mystery

How Worried Should We Be About 3D-printable Guns?

Physical science is the study of the physical world around you. Learn about everything from electricity to magnetism in this section.

Mathematician Claims Proof of 159-year-old Riemann Hypothesis

Antarctica's Spooky Cosmic Rays Might Shatter Physics As We Know It

How 'Word Cops' Unmask Anonymous Authors

Do you know what a meteor is, or what scientists mean when they are talking about cryogenics? Our collection of science terms explains the meaning of some of the most common scientific ideas.

10 Things You Should Know About Rachel Carson

Stephen Hawking's Last Paper Takes on the Multiverse

Quiz: How Much Do You Know About Stephen Hawking?

Are vampires real? What is an out-of-body experience? Are crop circles proof that aliens exist? HowStuffWorks explores what is real and what is urban legend with this collection of Science Versus Myth articles.

Is the Universe Just a Simulation?

How to Upgrade Your Shower, James Bond Style

Switching Shampoos: Necessary or Nah?

Explore the vast reaches of space and mankind’s continuing efforts to conquer the stars, including theories such as the Big Bang, the International Space Station, plus what the future holds for space travel and exploration.

Space Community Vows to Bounce Back After Soyuz Mishap

Pluto: Is It a Planet After All?

How NASA Works

Many of us take public transportation or fly in airplanes on a regular basis, but have you ever wondered how all of these things work? This collection of transportation articles help explain how people get from place to place.

Will the FAA Ever Regulate Legroom on Commercial Planes?

Got a Drone? Learn the Laws Before You Take Flight

HowStuffWorks Illustrated: How Physics Helps Animals Fly