If we ever want to simulate a universe, we should probably learn to simulate even a single atomic nucleus. But it’s taken some of the most incredible ingenuity of the past half-century to figure out how that out. All so that today I can...

Kinetic and potential energy are defined as combinations of more basic quantities: position, velocity and mass. These combinations are chosen so that their sum is conserved. It’s actually remarkable that there’s any such combination of...

If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?

It's the most famous prediction of perhaps the most famous genius of our time ... Stephen Hawking's theory of Hawking Radiation.

If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?

In stunning large-format photographs, Edward Burtynsky follows the path of oil through modern society, from wellhead to pipeline to car engine -- and then beyond to the projected peak-oil endgame.

Explore how to use a light microscope with the Amoeba Sisters! Includes microscope parts, how to use, and some helpful tips! Additionally, this video introduces a few types of light microscopes as well as electron microscopes. Expand...

Hank unravels the fascinating yarn of how the world came to use so-called Arabic numerals -- from the scholarship of ancient Hindu mathematicians, to Muslim scientist Al-Khwarizmi, to the merchants of medieval Italy.

Math is logical, functional and just ... awesome. Mathemagician Arthur Benjamin explores hidden properties of that weird and wonderful set of numbers, the Fibonacci series. (And reminds you that mathematics can be inspiring, too!)

This video is about how Russian physicist Aleksandr Fridman corrected Albert Einstein about the expansion of the universe. Einstein thought that general relativity implied that space had to be static and...

Have you ever sat in a doctor's office for hours, despite having an appointment? Has a hotel turned down your reservation because it's full? Have you been bumped off a flight that you paid for? These are all symptoms of overbooking, a...

This week we continue to spend quality time with gases, more deeply investigating some principles regarding pressure - including John Dalton's Law of Partial Pressures, vapor pressure - and demonstrating the method for collecting...

In which Hank shows you that, while it may seem like the Universe is messing with us, equilibrium isn't a cosmic trick. Here, he shows you how to calculate equilibrium constant & conditions of reactions and use RICE tables all with...

Recently, humanity filled the periodic table up to atomic number 118, which nicely rounds out that row. But are we done yet? Have we discovered all of the different elements? And what is an "island of stability?"

Howcast - Learn about amortization in this Howcast finance video with expert Gregory McGraime.

Howcast - Learn how to get rid of acne in Photoshop from certified trainer Scott Strong of The Training Farm in NYC in this Howcast Photoshop tutorial.

Howcast - Learn about chess calculation from Chess NYC in this Howcast video.

Pupil outcome: I can explain why the product stays the same when one factor is doubled and the other is halved. Key learning points: - When one factor is doubled and the other is halved, the product remains the same. - Arrays can be...

Pupil outcome: I can scale factors up and down by the same amount and explain the effect. Key learning points: - When one factor is scaled and the other is scaled down by the same amount, the product remains the same. - Arrays can...

Pupil outcome: I can use redistribution with addition of decimal fractions. Key learning points: - If one part is increased and the other is decreased by the same amount, the whole stays the same. - If one part is decreased and the other...

Pupil outcome: I can understand and use correct notation for positive integer exponents. Key learning points: - There is special notation for squares and cubes and each part can be named. - Repeated multiplication of the same number can...

Pupil outcome: I can use the mathematical structures that underpin the division of fractions to divide a whole number by a fraction. Key learning points: - A diagram can help to show the underlying structure. - The whole number can be...

Pupil outcome: I can calculate new data in a spreadsheet using formulas. Key learning points: - Formulas in a spreadsheet are used to perform common mathematical operations using data from cells. - Only cells that have a numerical data...

Explains how comparing 𝑄 Q with 𝐾 K determines the direction of reaction shift