Imagine you swallowed a small bird and suddenly gained the ability to fly - or you ate a cobra and were able to spit poisonous venom! Well, throughout the history of life (and specifically during the evolution of complex eukaryotic...

While you unwrap that luscious truffle, let Hank explain the science of chocolate -- where it comes from, what its active ingredient is, and how it works. Also learn the difference between chocolate, cocoa, cacao and coca, so you really...

Paul Andersen explains how polymers are formed from monomers. He describes how carbohydrates, protein and nucleic acids are created through condensation reactions. He also explains how these macromolecules are broken down through the...

Paul Andersen describes the molecular structure of DNA. He describes the major parts of a nucleotide and explains how they are assembled into a nucleic acid. The nitrogenous base, deoxyribose sugar and phosphate group make up a single...

Hank begins teaching you about your endocrine system by explaining how it uses glands to produce hormones. These hormones are either amino-acid based and water soluble, or steroidal and lipid-soluble, and may target many types of...

Paul Andersen continues his description of DNA and RNA. He begins with the structure of DNA and RNA and moves into the process of DNA Replication. He also describes the central dogma of biology explaining how DNA is transcribed to mRNA...

Humans can go inside or put on clothes, but trees spend winter naked in the cold. Why don't they all die?

New ReviewIt's alive!!!

New ReviewSugar glass is so cool!

In this video students will observe that regardless of the type of change that occurs in heating, cooling, or mixing, the total weight of matter is conserved. A hands-on demonstration helps students set-up their own activity to prove...

Do you think that sugar makes kids hyper? Well, you're wrong. Yes, WRONG. How do we know? Randomized controlled trials. RCTs are pretty much the most robust study design there is, and also the only way to prove causality. This week's...

Indonesians commonly eat rice at every meal with a variety of side dishes of meat, fish, and vegetables. Energy is expensive, and foods are often quick-fried or sautéed. Even with the fertility of Indonesian lands and a long growing...

This video explores why winter vegetables like brassicas and root crops taste sweeter during the colder months. It discusses the natural processes that lead to increased sugar content in these vegetables as a protection against freezing...

Brazil’s dynamic society has fueled the rise of new economic activity and a rapidly changing business environment, one that has become increasingly attractive to international investors and corporations seeking to gain a foothold in...

How has Brazil become the melting pot it is today? Find out by reviewing Brazil’s historical highlights and how the economy has evolved over the centuries. Learn about the arrival of Europeans in the 1500s; how Portugal extended rule and...

Brazil's economic outlook has varied throughout history, marked by periods of expansion and periods of uncertainty. But you might not realize that each period of growth in Brazil’s economy has been largely characterized by the importance...

This video is a humorous and light-hearted skit set in a restaurant called the Gramateria. The scene features a waitress named Wanda interacting with two customers who are mistaken for a couple. The customers clarify that they are...

This video outlines how DNA is structured and coded for genetics.

This video describes the processes of photosynthesis and cellular respiration.

This World Cultures instructional video discusses the evolution of the Atlantic slave trade.

Apple Blueberry Walnut Crisp Recipe

Juice vs. Soda

Is Eating Chocolate Really Good for Health?

Tricks to eating out when you have diabetes