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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.
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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 Do People Lie About Things That Are Easily Disproved?
Politicians and celebrities often lie or exaggerate claims that can be easily verified, but why?
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.
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 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.
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 has an important role to play in fighting off infections from viruses like the flu. Here's how it works.
Which came first, the chicken or the egg?
The chicken or the egg question is one that gets asked on a regular basis. We get asked this question frequently, so let's take a shot at it. Which came first, the chicken or the egg? Find out the answer in this article.
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?
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.
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.
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?
Can you lose weight faster if someone pays you to do it?
Anything that motivates you to better health is a good thing, right? But could cold hard cash actually be the "magic bullet" so many dieters seek?
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