Physical science is the study of the physical world around you. Learn about everything from electricity to magnetism in this section.
It's an odorless gas that's present in a variety of home products, cosmetics, car exhaust and even humans. But is it bad for us?
Making chemical compounds is a lot like dating. Some ions are naturally compatible; others hook up out of desperation.
Long-banned in the U.S., except for religious purposes, peyote is starting to be decriminalized in some cities. But is that a good thing for this endangered plant?
Primary colors are the blocks from which all other colors are built. But there's a lot more to know about them than the basic red, yellow and blue we learned about in kindergarten.
Alchemy may seem like a cousin to witchcraft but in reality it was the forerunner of modern chemistry.
You don't need to be a fan of chemistry to appreciate isotopes. They affect geology and medicine, too.
Coroners and medical examiners both help investigate unusual or violent deaths. The two jobs are different, but deeply connected.
Award-winning poet and fiction writer Mary Soon Lee has found a charming way to combine science and poetry in a refreshing new take on the periodic table of elements.
Whether you're a math whiz or not, there are some pretty cool number theories, beliefs and coincidences to appreciate. How down with digits are you?
You've probably had ice stick to your hand when you pull it out of the ice maker. But why is that?
Borax, a popular addition to laundry detergents and slime recipes, is a natural ingredient that has been getting flack for possibly being harmful to children. But is this true?
Mathematician Andrew Booker has found the three cubes that add up to the number 33, a long-unsolved math problem.
Modern color theory got its start with, believe it or not, Sir Isaac Newton, who also discovered a little thing called gravity and invented calculus.
Researchers in Sweden confirm through genetic testing that a 10th-century Viking warrior, first unearthed in the 1870s, was a woman.
Can you name even one female mathematician? Don't worry if you can't. That just means you need to read our article on five famous female mathematicians to up your cred.
What was once fringe science is becoming mainstream — scientists now believe that humans may be able to detect Earth's magnetic field.
Whether the circle is as big as Planet Mars or as small as a tennis ball, the ratio of its circumference divided by its diameter will always equal pi (3.14). But why?
If you've ever had a half-frozen beer explode on you, you know that yes, alcohol freezes — but not all types freeze at the same rate. We'll let you in on the secrets to frozen alcoholic delights.
It’s the ultimate cheat sheet for science class — and it’s right there hanging on the wall. What do you really know about the indispensable periodic table of elements?
The story of how the first new blue pigment in 200 years was discovered and took its place in the crayon box.
The proposed collider would dwarf the existing Large Hadron Collider. But is the $22 billion price tag worth it?
Autopsies have been around since ancient times, but they seem so shrouded in secrecy. What goes on when a corpse goes under the knife?
We hold our nose and investigate.
Is it its own special type of particle? A wave that's flowing through another medium? Or is there some creepy, unknown substance surrounding us that we simply don't perceive or understand?
For more than a century, the mass of a kilogram was defined by a weight stored in a French vault. But now, instead of a hunk of metal, the kilogram's mass will be tied to a mathematical equation.