Life Science

From the smallest microbe to the largest mammal, Life Science explores the origins, evolution and expansion of life in all its forms. Explore a wide range of topics from biology to genetics and evolution.

Topics to Explore

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How can children from the same parents look so different?

How can children from the same parents look so different? I mean, why don't all kids from the same parents look exactly alike, since the parents just have one set of chromosomes each and they don't change?

Life Science / Genetic Science

How can there be seedless grapes? How can they reproduce?

There is a good chance that if you go to the grocery store and buy a bunch of grapes that they will be of the seedless variety. If the grapes are seedless, how are they able to produce new grapes? Find out the answer to that question in this article.

Botany / Flowering Plants, Shrubs and Trees

How does hemp work?

How does hemp work? What do rope and "organic clothes" and drugs have to do with each other?

Botany / Flowering Plants, Shrubs and Trees

How Many Senses Does a Human Being Have?

We've all heard of a "sixth sense" and extra-sensory perception. So how many ways can we actually sense the world around us?

By HowStuffWorks.com Contributors Inside the Mind / The Human Brain

What is a gene, and what is genetic engineering?

Genes and genetic engineering is one of the most fascinating areas of science. It is a field that is constantly changing and evolving. What exactly are genes and how does the science of genetic engineering work? Find out in this article.

Life Science / Genetic Science

How Sleep Works

Every animal sleeps -- some more than others -- but why they do it is a mystery to scientists. Is sleep more than just beauty rest? Could skimping on it kill you? And how much do you really need?

By Marshall Brain Inside the Mind / The Human Brain

How Laughter Works

In this article, we'll look at laughter -- what it is, what happens in our brains when we laugh, what makes us laugh and how it can make us healthier and happier. You'll also learn that there's a tremendous amount that no one understands yet.

By Marshall Brain Inside the Mind / Emotions

How Cells Work

The human body is composed of about 10 trillion cells. Everything from reproduction to infections to repairing a broken bone happens down at the cellular level. Find out all about cells.

By Marshall Brain Life Science / Cellular & Microscopic Biology