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

Learn More / Page 24

How does your body know the difference between dominant and recessive genes?

Ever since I took biology in high school I have wondered -- why do humans (and plants and animals) have two of every gene, and why is one "dominant" and the other "recessive"? How does my body know which one is dominant? How does it pick between the

How Your Brain Works

Every animal you can think of -- mammals, birds, reptiles, fish, amphibians -- all have brains. But the human brain is unique. It gives us the power to think, plan, speak and imagine.

How Designer Children Work

Given the choice, would you rather have been born with a different eye color, hair color or skin tone? Of course, you didn't have these options, but could you have them for your own children?

What are stem cells and what are they used for?

Stem cells are a controversial topic because they are grown from human embryos. Learn about the controversy and get the facts here.

What is a fossil?

We can see dinosaur and plant fossils at just about any natural museum. What exactly are fossils, though, and how do they form? Find out the answers to these questions in this article from HowStuffWorks.

How Human Cloning Will Work

With movie titles like "Attack of the Clones" and "The Clone Wars," it's no wonder human cloning makes us anxious. As scientists make startling discoveries cloning animals, are humans next?

How Cloning Works

Cloning is the process of making a genetically identical organism through nonsexual means. In this article, we will examine how cloning works and look at possible uses of this technology.

What is the difference between a hardwood and a softwood?

What is the difference between a hardwood and a softwood? How hard does a tree have to be to be considered hardwood?

What makes us yawn?

Your co-worker just yawned in a meeting, and now everyone on his side of the table is yawning, too. Learn about what might've caused him to do it in the first place and why you're likely to yawn right along with them.

How do bacteria become resistant to antibiotics?

Why have some bacteria become resistant to antibiotics? Learn about the role of antibiotics in drug-resistant bacteria strains.

How DNA Evidence Works

The CBS drama "CSI: Crime Scene Investigation" routinely uses cutting-edge technology to solve crimes, including collecting and analyzing DNA evidence. But catching a criminal using DNA evidence is not quite as easy as "CSI" makes it seem.

How Venus Flytraps Work

Plants that eat other creatures? It sounds like a genetic experiment gone awry. But there's actually nothing unnatural about it; carnivorous plants have been around for thousands of years. Find out all about the Venus Flytrap.

Why can't you tickle yourself?

Even if you're very ticklish, you probably are incapable of tickling yourself. Learn why.

How Fat Cells Work

Learn about weight gain and the processes going on in your cells.

How Viruses Work

Influenza and Ebola are both viruses. Find out what a virus does to your body and how to decrease your chance of exposure.

What constitutes a person's IQ?

The term IQ typically refers to a score on a test that measures someone's cognitive ability. What does this test constitute exactly? Find out if IQ tests can accurately measure someone's intelligence.

Where does the color come from in purple cabbage?

Nature uses color in lots of different ways. Find out why some types of cabbage are purple and what this means.

How can the grass on the greens at a golf course be so perfect?

How can the grass on the greens at a golf course be so perfect? What are they doing that's different from a normal lawn? Could my lawn look like this?

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.

How does hemp work?

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

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?

How do Mexican jumping beans work?

A fair number of cartoons feature "Mexican jumping beans." For example, Speedy Gonzalez is trying to outwit a foe and uses Mexican jumping beans to escape. What I want to know is: Are Mexican jumping beans for r

What Are Frankincense and Myrrh?

If you've heard of frankincense and myrrh, it's probably because you're familiar with the biblical account of Jesus' birth. But have you ever wondered what exactly it was the three wise men gifted Christ?

Can grass seed grow on a lava rock as well as it can grow on soil?

Grass seed can grow just about anywhere, just as long as they have plenty of water and nutrients. Can grass grow on lava rocks as well as it can on soil, though? Find out the answer to this question in this article from HowStuffWorks.

Why does your body temperature rise when you have a virus such as the flu?

Your body temperature monitored by your immune system as it fights off infection. Learn why a high temperature helps fight infection.


Recommended