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Hear about some of the world's fastest transportation breakdowns. Find out how each form of transportation failed, the basic engineering missed during construction, and what engineers learned from their mistakes.

Hear about some of the world's greatest gadget disasters. Find out how each gadget failed, what went wrong with its design or manufacture, and what programmers learned from their mistakes.

Hear about some of the world's biggest building blunders. Find out how each structure failed, the basic building block that was missed during construction, and what engineers learned from their mistakes.

In science fiction, invisibility cloaks let their users vanish from sight and sneak around unnoticed. How could one of these stealthy pieces of clothing work? Scientists have some ideas, which involve bending light. Discover the science and technology behind what it would take to make a real-life invisibility cloak!

In science fiction, time machines let people travel backward in history and forward to the future. How could one of these time-traveling devices be created? Scientists have some ideas, which include using spaceships and black holes. Discover the science and technology behind what it would take to make a real-life time machine!

In science fiction, energy blades are weapons or tools that look like glowing swords. How could one of these powerful devices work? Scientists have some ideas, which include using plasma. Discover the science and technology behind what it would take to make a real-life energy blade!

In science fiction, hoverboard users glide above sidewalks on machines that look like skateboards with no wheels. How could one of these floating boards be created? Scientists have some ideas, which include using powerful magnets. Discover the science and technology behind what it would take to make a real-life hoverboard!

In science fiction, deflector shields protect ships, bases, and even planets from enemy attack. How could a protective space that absorbs energy from weapons be created? Scientists have some ideas, which include using lasers. Discover the science and technology behind what it would take to make a real-life deflector shield!

In science fiction, jet packs let people zoom through the air at high speeds. Discover the science and technology behind what it would take to make a real-life jet pack!

In science fiction, people upload their minds into computers for them to be stored. How could this futuristic way of preserving the mind work? Scientists have some ideas, which involve mapping the brain cell by cell. Discover the science and technology behind what it would take to upload a mind in real life!

In science fiction, flying cars let people soar over traffic jams and get to where they're going quickly. How could a vehicle that both flies and drives be created? Scientists' ideas for this involve futuristic materials and technology from drones. Discover the science and technology behind what it would take to make a real-life flying car!

The city of Paris wanted to tear down the Eiffel Tower! Gustave Eiffel, an engineer and amateur scientist, had built the incredible structure for the 1889 World's Fair. Created using cutting-edge technology, it stood taller than any other building in the world! More than a million delighted people flocked to visit it during the fair. But the officials wondered, beyond being a spectacle, what is it good for? It must come down!

People have been traveling over water to get from here to there for thousands of years, but not in these vehicles! Long ago, people could only dream of what modern technology would bring. Take a tour of some of the most unique and fascinating watercraft around.

Nikola Tesla was a scientist and inventor in the late 1800s and early 1900s. Among his many inventions and experiments, he helped create the modern electricity system. Learn more about Tesla's life as a famous inventor!

Imagine you arrive at school and realize you forgot to feed the dog. No problem. Pull out your phone and command the dog dish to dispense a serving of food. That's all there is to it—if you live a smart home. What once sounded like science fiction is now a reality for some families.

A virtual assistant by any name—Alexa, Siri, whoever—can be a sweet addition to your home. You might use one for simple jobs like playing music or streaming podcasts. And you might use one to communicate with friends and remind you about homework coming due while helping you make your breakfast. Find out how digital assistants work and what the future might hold for this part of a high-tech home.

Trains and other vehicles that travel on rails and tracks have been around for hundreds of years. While most of these are for transportation, roller coasters and a few others are just for fun! Find out how maglev trains use magnets to reach speeds of more than 250 miles per hour. Discover what it's like to travel in a pod car, and learn how the world's wildest roller coasters live up to their scream-worthy rankings. See the most awesome rides on tracks and rails!

Streaming puts a world of options at your fingertips when you’re at home and, with a smartphone or tablet, when you're on the go. Find out how streaming was invented, how it works, and what the future might hold for this part of a high-tech life.

The wheel was invented more than 5,000 years ago, and it has brought some awesome vehicles our way. But this invention isn't done giving! Take a tour of some of the most unique and fascinating vehicles around.

Humans are ingenious when it comes to meeting challenges. We invent all sorts of useful contraptions from the wheel to the can opener. But some of the things people have come up with are truly odd. Who came up with grass sandals, and why? Have you ever heard of a portable radio hat? Not many people have, but someone invented it. Get the inside scoop on these odd contraptions and many more weird inventions.