In this video, students will learn about global warming and its causes, and will answer questions on the subject, while also addressing the period of the COVID-19 pandemic

The instructors of almost every pastry course will turn to the students at some point in the first lesson, and say, in all seriousness, “Baking is an exact science.” Why do they say this? And what precisely do they mean? Maybe it really is science.

Many associate biotechnology with stern-looking scientists in white coats, performing peculiar experiments in advanced laboratories. However, it turns out you can also initiate biotechnological processes from the comfort of our own kitchen, no lab coats or expensive equipment required.

Anyone who has ever washed pots and pans, knows that Teflon-coated cookware is one of the easiest to wash by far. It seems that no matter how hard one tries, nothing sticks to such cookware. How does this magic occur?

Water is vital for life, but must be cleaned in order to be consumed safely. Today it is not always possible to drink water straight from the reservoir. It should be treated to become potable. The next video shows the purification process of drinking water.

Are males actually needed for reproduction? Possibly not, but it is certainly easier with them.

In the past, present and naturally. How are mummies created, and what is in common between deserts, snowy peaks and boglands?

In this video, students will learn why we cry while cutting onions, and will answer questions related to the different substances present in onions. Prior knowledge on structure and bonding, different graphic representations of molecules, the collision model, enzymes and isomers, is required.

A magnetic field is created by the movement of electric charges through metal. The existence of a magnetic field creates a real force that influences its surroundings. This force depends on the direction of the current and the field (the direction of the field lines) and their intensity. There are a few simple rules for determining the direction of this force. In fact, you can see it simply by using your hand. The video demonstrates the force and shows how to identify its direction.

The following video presents the causes of acne, different possible symptoms, and common medical treatments.

In this video, the students will watch a reaction that is very difficult to carry out in a lab: a reaction between cesium and fluorine, and will answer questions related to the two elements in the reaction and to the reaction product

Wind has always been used as an energy source, whether for wind-powered sailboats or flour mills. As an energy source, it is endless. It is also used nowadays for electricity production. Its basic principle is quite simple, and is actually similar to hydraulic power stations: The wind turns a turbine, which spin magnets that produce electricity.

This video explains two important topics in quantum mechanics.

When we tell someone who is unwell “It is all in your head”, we rarely suspect the extent to which this is true. The world of medicine in recent years has started to obtain a better understanding of the phenomenon known as “the placebo effect” – a situation in which treatment with a false medicine leads to an actual improvement in the health condition.

Beyond endless lists of numbers, statistics enable us, when the data is presented visually, to draw far-reaching conclusions. In the following video, Kim Preshoff presents population pyramids – a visual representation of the population data of a country. He shows population pyramids of various countries and how these pyramids allow us to learn about the countries’ past and predict what the future may hold for them.

Watch the video and discover how many piano tuners are there in Chicago and how you can reach the solution.

It has been 38 years since the World Health Organization (WHO) announced the eradication of a disease that killed hundreds of millions of people in the 20th century alone, and apparently destroyed entire civilizations in the new world.

Despite the disdain they evoke for some of us, researchers see insects as the new superheroes that will save the world from starvation. Are they really a practical alternative to meat?

In this experiment we will take a regular balloon and make it sticks to the ceiling – in a way that looks like it is a light helium balloon which is lighter than the air.

What do sunflowers and pinecones have in common with rabbits? What do they all have to do with math? Watch this video from Scientific American’s Instant Egghead series and discover the answer!