There’s more to DNA than just the double helix we know and love: under some conditions this familiar molecule can take on unfamiliar forms, each of which can have a different impact on our health.

FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some handy keywords to get your googling started:

Data - information, typically stored on computers via electrical...

Can folding a piece of paper 45 times get you to the moon? By seeing what happens when folding just one piece of paper, we see the unbelievable potential of exponential growth. This lesson will leave you wanting to grab a piece of paper...

Plastics usually stop electricity in its tracks, but scientists have figured out a way to keep the electrons flowing.

In this video Paul Andersen explains how the bond length and bond energy are calculated using an energy distance graph. The strength of the bond is determined by the charges in the constituent atoms. As the charge increases the bond...

Language is complicated, especially in organic chemistry. This episode of Crash Course Organic Chemistry is all about nomenclature. We'll dive into IUPAC systematic naming of organic molecules, and get to practice with the help of three...

Honeybees are some of nature's finest mathematicians. Not only can they calculate angles and comprehend the roundness of the earth, these smart insects build and live in one of the most mathematically efficient architectural designs...

Today Hank talks about the deliciousness of alkenes & alkynes, their structures, and how to remember which is which by simply knowing the alphabet. Also, he breaks down hydrogenation, halogenation, polymerization, and...

Take a look... A VERY special guest, LeVar Burton, explains how Double Rainbows are formed.

You might have a friend who is “double-jointed" and can bend their fingers in freaky ways. Why are they are so flexible?

New ReviewIn this video we are going to work through long division of polynomials step by step.

New ReviewThis video introduces and practices Near Doubles facts. Using what we know about doubles helps us solve facts that are near doubles facts. This is perfect for kindergarten, 1st grade, 2nd grade, and early learners, this video covers...

In this shorts math video we will review how to write an exponential function to answer a standardized math test question. We will identify the key information provided in the problem - initial amount, rate of increase or decrease, and...

In this video, dive into calculating IPv4 addresses using binary, solidifying your subnetting skills.

In this video, observe a demo of configuring and using link-local addresses in an IPv6 network.

In this video, explore unique local and link-local IPv6 addresses, used for communication within private networks.

In this video, watch a demonstration of configuring IPv6 global unicast addresses on a Cisco router.

This video introduces and practices Doubles facts.



This is perfect for kindergarten, 1st grade, 2nd grade, and early learners, this video covers doubles math facts practice. Whether you're teaching in the classroom or at home,...

The 2025 US Open isn’t just tennis, it's a business powerhouse. The USTA confirmed it will distribute $90 million to players, a significant 20% jump from the $75 million it offered in 2024. It also puts the US Open far ahead of the other...

Airplanes will change immensely in the next 50 years as the industry limits its CO2e emissions. These are some of the innovations that are in-progress.

A video entitled "Explicit Formula Geometric" that covers how to find future terms in a geometric sequence.

Explore this classic gravitation problem where three masses form an equilateral triangle and a fourth mass is placed at the center. Learn how to calculate the mass required for gravitational force balance and why doubling the central...

Howcast - Learn how to do a simple hip-hop routine from choreographer Randy Connor in this hip-hop dance video from Howcast.

Howcast - Learn how to say "LL" in Espanol from Spanish teacher Andrea Cukier in this Howcast video.