How does a seismograph detect and record earthquakes? Watch this episode of "How Does it Work?" to learn how these instruments track earth’s movements.

How do hydraulic systems use fluid power to move heavy objects? Watch this episode of "How Does it Work?" to learn what makes hydraulic machines work.

How does a helicopter lift off and move in any direction? Watch this episode of "How Does it Work?" to discover the mechanics behind helicopter flight.

How do rainbows form in the sky after it rains? Watch this episode of "How Does it Work?" to learn what creates these colorful arcs.

How does an escalator move people between floors so smoothly? Watch this episode of "How Does it Work?" to see the mechanics behind moving stairs.

How does the eye let you see the world around you? Watch this episode of "How Does it Work?" to find out how your eyes process light and images.

How does a drone fly and capture images from above? Watch this episode of "How Does it Work?" to explore the technology behind drone flight.

How does drinking water get cleaned and delivered to your tap? Watch this episode of "How Does it Work?" to see the journey water takes before you drink it.

How does a 3D printer turn digital designs into real objects? Watch this episode of "How Does it Work?" to see the process behind 3D printing.

How does a hot air balloon lift off and float in the sky? Watch this episode of "How Does it Work?" to learn about the science behind balloon flight.

How do train tracks guide and support trains on their journeys? Watch this episode of "How Does it Work?" to find out what keeps trains moving safely.

How does a rollercoaster race along its twists and turns? Watch this episode of "How Does it Work?" to learn what powers these thrilling rides.

How does Siri understand your voice commands and give you answers? Watch this episode of "How Does it Work?" to discover what happens when you talk to Siri.

How does a robot vacuum clean your floors on its own? Watch this episode of "How Does it Work?" to find out how these smart devices navigate and tidy up.

How does autopilot control a plane during flight? Watch this episode of "How Does it Work?" to see what happens when pilots let technology take over.

How does email get your messages from one device to another? Watch this episode of "How Does it Work?" to learn what happens behind the scenes when you send an email.

How does an ATM let you access your money anytime? Watch this episode of "How Does it Work?" to see what happens inside an ATM.