Dr. Algae explains the health benefits of activity. He then compares an active kid with an inactive kid and describes the differences between them.

We've all do it at one time or another, but is popping a PIMPLE, ZIT, or SPOT the right thing to do? Could you be doing more bad than good, or is it better to leave it alone?

What are you doing wrong every night?! Start building your ideal daily routine !

How FAST can we RUN? How many Gs can we withstand? What’s the limit of human ENDURANCE? How much can we LIFT?

What's The HIGHEST ALTITUDE Humans Can SURVIVE? Take away oxygen masks and pressurized suits and what is the highest limit of human survival?

How long can you survive without SLEEP, WATER, FOOD and AIR? How HOT or COLD can you go? What is the MAXIMUM HUMAN AGE LIMIT?

Just how unique are your fingerprints? Appendix’s purpose? Why aren’t we totally human? How do we really taste things?

What is the deepest dive a human can survive? It’s far deeper than you could even imagine! Join us on this journey into the depths of human survival.

Philosopher Brian Epstein (Tufts University) gives examples of social facts that depend on nothing particularly human at all.

Award-winning author Pankaj Mishra describes how many people educated in the Western tradition, himself included, have only recently come to appreciate the intellectual significance of many aspects of Buddhist thought.

Primatologist Frans de Waal (Emory) describes how chimpanzees, along with many other species, reconcile after fights.

Cognitive scientist Victor Ferreira (UC San Diego) describes current thinking in the language sciences about how language systems change and adapt over time.

Universal Law of Gravitation explores Newton’s Universal Law of Gravitation by defining and providing examples.

Earth’s Resources explains the usefulness of Earth’s physical resources as raw materials for the man-made world by describing the usefulness of these resources.

“Using Personification in Poetry” is a video lesson that defines personification, discusses its use in poetry, and demonstrates how to compose a poem using personification.

Classicist and political theorist Josiah Ober (Stanford) describes the standard Aristotelian argument of capacities and flourishing.

Author and independent scholar Pankaj Mishra describes how, despite being born not far from where the Buddha lived and preached, he had to make a special effort to learn about Buddhism.

Classicist and political theorist Josiah Ober (Stanford) highlights the importance of dignity for a well-functioning democracy.

Poet and independent scholar Jennifer Michael Hecht argues that meaning is naturally shaped by our culture.

What stereotypes do you believe about AI? Let me know in the comments and we can discuss :)

Sophia is a humanoid robot that uses AI to interact with people in ways that can seem oddly… human.

Turns out AI doesn't usually start making its own decisions. Nor does it fall in love with you. Sorry.

Five Themes of Geography identifies the five themes of geography by examining location, place, human-environment interaction, movement, and region.

The Excretory System describes the functions of the organs of the excretory system, including the kidneys, liver, and skin.