Physical Science

Most of the world uses meters, apart from the U.S. and a few other countries. So what's an easy way to convert from meters to feet and vice versa?

By Mark Mancini

A perfect storm of circumstances combined to create what one pool industry expert is calling "poolmageddon." Why? Because there's a major lack of chlorine in the U.S. right now. How will it affect the pool season?

By Jennifer Walker-Journey

This human-made element can power everything from nuclear weapons to deep space missions. So what's so scary about plutonium?

By Mark Mancini

There was a time (4,000 years ago) when simply being able to add might get your name on a clay tablet or help you accumulate vast wealth.

By Dave Roos

Thorium is in many ways safer than uranium for nuclear power production. But is it safe enough to bet on for our energy future?

By Jesslyn Shields

Scientists have come up with a new formula to describe the shape of every egg in the world, which will have applications in fields from art and technology to architecture and agriculture.

By Jesslyn Shields

Dividing fractions is easy once you learn a couple of rules and remember three words — keep, change and flip.

By Jesslyn Shields

Your eyes aren't playing tricks on you. Those mountains way off in the distance really do look blue, and it's because of how light wavelengths scatter in the atmosphere.

By Mark Mancini

Cadmium is a natural metal and the leading component in rechargeable batteries and solar cells. It is also highly toxic and heavily regulated.

By Allison Troutner

We all have favorite colors. But have you ever considered why you like one color more than another?

By Allison Troutner

Real numbers are the opposite of imaginary numbers and include every number you can think of.

By Jesslyn Shields & Yara Simón

Discovered in the early 1800s from a chunk of smuggled platinum ore, rhodium is the most valuable precious metal on the planet today, used mainly for keeping car emissions in check.

By Allison Troutner & Austin Henderson

The main function of the Krebs cycle is to produce energy, stored and transported as ATP or GTP, to keep the human body up and running.

By Jesslyn Shields & Austin Henderson

Many people get speed and velocity confused. It's no surprise because the terms are often used interchangeably. But they're not quite the same thing. So how do you find the velocity of an object?

By Mark Mancini

Superacids are those with an acidity greater than sulfuric acid. So which is the most super of superacids and what exactly is it used for?

By Allison Troutner & Austin Henderson

We'll show you both a quick and dirty way, and a precise, more complicated formula for converting Celsius to Fahrenheit (and vice versa).

By Sydney Murphy & Austin Henderson

Numerators and denominators, oh my! It sounds complicated, but learning how to multiply fractions is easy. It just takes three simple steps.

By Jesslyn Shields

A unit circle is an important part of trigonometry and can define right angle relationships known as sine, cosine and tangent.

By Nokware Knight & Austin Henderson

Both degrees and radians represent the measure of an angle in geometry. So, how do you convert one to the other?

By Mark Mancini

Sir Isaac Newton's Law of Universal Gravitation helps put the laws of gravity into a mathematical formula. And the gravitational constant is the "G" in that formula.

By Mark Mancini

Although the term might be unfamiliar, you know all about alkali metals. Ever used salt or eaten a banana? So, what special properties do these elements have?

By Trevor English

Vantablack is one of the darkest substances known, able to absorb up to 99.965 percent of visible light. But is it the blackest of blacks on the planet?

By Cherise Threewitt

Static electricity happens when there's an imbalance between negative and positive charges in an object. It's when those charges get released that we feel that infamous spark.

By Sebastian Deffner

More than fodder for melt-in-your-hand YouTube videos, gallium is a key component in LED lights and the powerful microchips in your smartphone.

By Dave Roos

It's an important question, so come with us and we'll show you how to figure it out.

By Jesslyn Shields