Category: Source


How the Food You Eat Affects Your Gut

The gut microbiome, which is made up of trillions of bacteria, viruses, and fungi, performs various functions in our bodies, including breaking down food, producing nutrients, regulating the immune system, and protecting against harmful germs. Factors such as environment, medication, and diet can affect the microbiome, with dietary fiber from foods such as fruits, vegetables, nuts, legumes, and whole grains being the best fuel for gut bacteria. Low-fiber processed foods can cause a decrease in diversity of the microbiome, leading to a range of health issues.


How Much Sleep Do You Actually Need

The ideal amount of sleep for humans is seven to eight hours per night, according to most studies, with less than seven hours leading to an increased risk of heart disease, obesity and diabetes, and more than eight hours increasing the risk of heart disease, obesity, diabetes and an increased risk of mortality. Genetics play a big role in how much sleep an individual needs, with some people unaffected by only six hours of sleep, however, sleep debt after long-term deprivation can cause a slower recovery of cognitive function.


How Long Should Naps Be?

The benefits and drawbacks of napping. The lesson details the different stages of sleep, timing and duration of naps, and the cognitive benefits of napping. It is suggested nappers are able to move through sleep stages more easily, while non-nappers may experience more deep sleep while napping, making them groggy afterward.


Can You Solve the Giant Spider Riddle?

This lesson is about a competition wherein the world’s greatest spiders compete to be the next arachno monarch. The protagonist, an itsy-bitsy spider, must face off against the reigning champion, Queen Shelob, in the Whirled Wide Web.

Nature of Science

Why are There So Many Insects?

Insects outnumber humans by more than a billion to one and make up approximately 75% of all animals on Earth. Their abundance is due to their impressive ability to breed and their exoskeletons, small size, and ability to adapt to extreme environments.

Literature & Language

Who IS Sherlock Holmes?

The lesson discusses the evolution of the fictional character Sherlock Holmes, created by Arthur Conan Doyle, over time. It highlights the difference between the popular portrayal of the detective and the original character created by Doyle.


3 Tips to Boost Your Confidence

The lesson discusses how confidence is a combination of self-esteem, optimism, and courage, and is shaped by genetics, how we are treated, and the choices we make. It provides 3 tips to cultivate one’s own confidence: a quick fix, believing in one’s ability to improve, and practicing failure.


You Can Only Save One – Who do You Choose?

This lesson discusses utilitarianism and how it can be used to decide between saving two groups of passengers in an interstellar disaster, considering their age and the amount of life they have lived. It also touches on the idea that those who are worse off should be given priority, and the suggestion to flip a coin in order to give each individual an equal chance of being saved.

Science & Technology

Can You Freeze Yourself and Come Back to Life?

James Bedford was the first person to be cryogenically frozen in 1967 in order to cheat death. The process of cryopreservation, as studied by cryobiology, is difficult, as damage can occur when trying to lower the temperature. Despite research into cold-tolerant animals and vitrification techniques, cryonics cannot currently preserve a human body indefinitely and the dream of cryonics is still on ice.