On July 26, 1943, Los Angeles was blanketed by a thick gas that stung people’s eyes and blocked out the Sun. Panicked residents believed their city had been attacked using chemical warfare. But the cloud wasn’t an act of war. It was...

👉 Learn about the special right triangles. A special right triangle is a right triangle having angles of 30, 60, 90, or 45, 45, 90. Knowledge of the ratio of the length of sides of a special right triangle enables us to solve for any...

In this video, we will be creating notification functions for our full-stack Twitter Clone app. These functions will allow us to send notifications to users when certain events occur, such as when someone follows them or likes their tweet.

This instructive video describes what makes science different from other disciplines, while highlighting many exciting science career opportunities. Concepts and terminology: observing, solving problems, health, career, education, and...

Learn the basics about carbon neutral and biofuels, as a part of environmental chemistry. Coal, oil, natural gas, shale gas and gas from fracking are fossil fuels formed hundreds of millions of years ago from living things that got...

This video discusses the problem of environmental pollution and its three aspects: the introduction of contaminants, the extent to which they are present, and their harm to living beings and the environment. It also covers different...

Jessi and Squeaks show you how to make a pinhole viewer so you can safely watch the solar eclipse!

A world without predators. It sounds like a safer, happier world, but come on, this is science…

Photosynthesis plays a huge role in regulating the earth's CO2. But what happens when the temperature gets high enough that photosynthesis slows down?

Howcast - If you’re still living in the Ice Age—that is, with a non-defrosting freezer—you’ll need these ancient skills.

We mostly think of DNA as something we find inside the cells of living things, but actually it’s all around us. It’s in the ground, in the water and even in the air! What’s it doing there? How can we study it? What can we learn from it?...

Consider the classic white t-shirt. Annually, we sell and buy 2 billion t-shirts globally, making it one of the most common garments in the world. But how and where is the average t-shirt made, and what's its environmental impact? Angel...

To human eyes, the world at night is a formless canvas of grey. Many nocturnal animals, on the other hand, experience a rich and varied world, bursting with details, shapes, and colors. What is it, then, that separates moths from men?...

America doesn't have a gun problem, it has several of them. These charts and maps break down the scope of the problem='http://bit.ly/2odFYVK' target='_blank' rel='nofollow'>problem No other developed country in the world has anywhere...

We often think of ancient Greek society as White, but it was a lot more diverse than we give it credit for.

Science, Chemistry, learn, Revision, GCSE, Alevels, AQA, students free online courses video science videos, student, fuseschool, global education, ict4d, Water (Chemical Compound), Water Cycle, Environmental Chemistry (Field Of Study),...

In this video, the teacher explains how good readers use their knowledge of punctuation to read fluently. They discuss the importance of pausing at the right places, using the appropriate tone of voice, and understanding the different...

Words Are Ours | POEM | Kids' Poems and Stories With Michael Rosen from ‘Big Book of Bad Things’ (Puffin). Words are ours In the beginning was the word and the word is ours: the names of places, the names of flowers, the name of names,...

As populations have grown, farming practices have become more intensified to maximise crop yields and ensure we can feed the ever growing population. Fertilisers and pesticides are used on crops, and animals may be kept inside in more...

Learn the basics about water pollution, whilst learning about environmental chemistry. The substances mankind throws away have polluted lakes, rivers and even the oceans. The United Nations estimate that around 10% of the world’s people...

Learn some more about the hole in the ozone, as a part of environmental chemistry. The hole in the ozone layer has become thinner, mainly due to CFC’s. CFCs are inert stable molecules and were once the wonder chemical. They were...

In the Spring of 2020, the physical construction of the PACE spacecraft moved into high gear, with engineers working hard to build, assemble, and test the actual machine. When the global COVID-19 pandemic...

Carl Linnaeus classified all living things into groups based upon their physical features. His system placed organisms with the most similar characteristics together in a group he called the “species”. A species is defined as all...

"Subtracting Cookies" uses cookies to model subtraction problems.