The Appalachian Mountains are some of the oldest geological features on earth. And they also hold fossils that tell us about some of the very earliest life forms that we'll ever manage to see in the fossil record. So how did these...

How is it possible to have cataclysmic eruptions without any real cataclysm?

Today we're going to talk about LARPs or live action role-playing games. Larping tends to conjure up the image of a bunch of nerds hitting each other with foam weapons but it's much more than that. LARPs merge performance, community, and...

Biologist Sheila Patek talks about her work measuring the feeding strike of the mantis shrimp, one of the fastest movements in the animal world, using video cameras recording at 20,000 frames per second.

In this passionate talk, legendary spacecraft designer Burt Rutan lambasts the US government-funded space program for stagnating and asks entrepreneurs to pick up where NASA has left off.

Check out the "What is a Day?" interactive video at
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It's super cool!! (and made by Jasper Palfree & the MinuteEarth/MinutePhysics...

Squeaks built a pretend time machine, and he and Mister Brown use their imaginations to travel back in time to learn all about the very first living thing!



Second Grade Next Generation Science
Standards
Disciplin
ary...

Epidemiologists are always trying to get one step ahead of the next big outbreak - and often the best clues we have come from outbreaks of the past. Chapters BUBONIC PLAGUE VICTIMS 0:25 THE GREAT DYING 17th Century 0:47 WAMPANOAG LAND...

Literally, ‘mise-en-scene’ means “placing on stage.” But in film, mise-en-scene encompasses everything the camera is capturing. The artists and crafts-people who work in Production Design, Wardrobe, and Hair and Makeup are responsible...

In which John Green teaches you about the massive immigration to the United States during the late 19th and early 20th century. Immigrants flocked to the US from all over the world in this time period. Millions of Europeans moved to the...

When you think of North American cuisine, do Indigenous foods come to mind? Chef Sean Sherman serves up an essential history lesson that explains the absence of Native American culinary traditions across the continent, highlighting why...

Over the years, lots of explanations have been proposed as the origin of Stonehenge, including lost technologies, outright magic, and — of course — aliens. What do we actually know about this prehistoric mystery?

Master the fundamentals of AP Physics 1 Unit 1: Kinematics with this clear, example-driven walkthrough of common stumbling blocks students face. We’ll break down how instantaneous velocity differs from average velocity, why “negative...

What happens when a satellite slows down in orbit? Learn how a small Δv transforms a circular path into an elliptical orbit, with step-by-step analysis of orbital energy, period, and arrival timing.

The Outer Banks, known as the "Graveyard of the Atlantic," is home to thousands of shipwrecks, including Blackbeard’s infamous Queen Anne’s Revenge. But beyond the maritime history, this fragile coastline is rapidly changing—threatened...

Explore how a satellite’s kinetic and potential energy change as it orbits Earth—yet its total mechanical energy stays constant. Learn why speed depends solely on orbital radius, why mass doesn’t matter, and how all this ties into...

Howcast - If you want to download corporate filings information in bulk, learn how to use file transfer protocol, or FTP, to access EDGAR, the U.S. Securities and Exchange Commission's online database.

Even as many Maya cities fell during the 9th century, some places like Caracol, Seibal, and sites in the northern Yucatán managed short-lived comebacks. These cities built monuments and revived traditions for a while, but most eventually...

Understand the physics of uniform circular motion, its requirements, and key formulas like centripetal acceleration. Learn real-world examples, distinctions from non-uniform motion, and the derivation of UCM equations

This content explores the relationship between linear and angular variables for a rigid body undergoing rotation with constant angular acceleration. It clarifies how concepts like linear speed and acceleration vary with radial distance,...

Deborah Riley Draper is a writer, director, filmmaker, producer, and author of Olympic Pride, American Prejudice. Her documentary and book explore the untold story of 18 African-American athletes who competed in the 1936 Berlin Olympics,...

Compound Interest | Numbers In this video we’re going to look at compound interest. If you have a savings account and deposit some money, the bank will pay you extra money as a sort of thank you for saving with them. You are effectively...

What are Overlapping Warranties?

Magnuson Moss Warranty Act