SciShow explains the genetics -- and physics -- behind why blue eyes are blue, and what the future may be for the trait. Spoiler alert: Blue eyes aren't really blue! SciShow explains!

Paul Andersen details the processes of photosynthesis and respiration in this video on free energy capture and storage. Autotrophs use the light reactions and the Calvin cycle to convert energy from the Sun into sugars. Autotrophs and...

It's kinda embarrassing when you spill stuff on your shirt and it makes a stain. So you might as well understand the science behind it, so at least you can act all smart and explain it to people.

Your friend's birthday is tomorrow, and he's turning... well... you've forgotten. A ginormous cake has been prepared and your job is to sculpt his age as the chocolate centerpiece. The birthday boy is a giant, and you're afraid that if...

You know how moths like to fly into lamps or crawl all over your tv screen at night? Why do they do this?! The answer is more complicated than you might think

What scientific thinkers and achievements have led to vast improvements in optics over the centuries? Discover the fascinating ways that our understanding of light informs the world in which we live.

Bakers will sometimes replace the butter, oil, or eggs in their breads, muffins, and assorted tasty treats with applesauce. That pretty much sounds like culinary magic, but it's not... it's culinary SCIENCE!

Is she turning towards you or away from you? No one can agree. She's the subject of Dutch Master Johannes Vermeer's "Girl with the Pearl Earring," a painting often referred to as the 'Mona Lisa of the North.' But what makes this painting...

In nature, most of our basic forces both attract and repel. In fact, gravity is the only exception. But, according to theorists, sound waves actually have negative gravity.

How will we communicate with the ships that we send to other stars? Scientists think the answer might involve using the sun as a giant lens to strengthen the signal.

This video explores the fascinating world of orchids, showcasing their unique strategies for survival and reproduction. From mooching off fungi to cheating pollinators and thriving in inhospitable environments, orchids have evolved into...

Microscopes are great for studying tiny things, but they have limits. Luckily, scientists have found a way to make tiny things larger, and it involves a chemical you can find in diapers.

Some fish have superpowers! Zebrafish eyes can boost the color and contrast of what they see and baby whale fish are electric.

Astronomers looking farther back in time than ever before are giving us a better idea of what the early universe must have been like, and we've identified another of the mysterious ultraluminous X-ray pulsars.

Not all of the naturally occurring elements were discovered here on Earth. Helium was discovered by examining sunlight, and that same technique is now teaching us about the composition of distant galaxies.

You like space exploration, and we like space exploration. So why aren't we investigating our closest to galactic neighbor, the triple star system Alpha Centauri? Is it time to give interstellar travel a shot? How would we do it? Hank...

While not the kind of epidemic you're used to hearing about, nearsightedness is becoming a major health issue in many places. Learn about how scientists are finding out the reasons behind the increase in myopia, and how sunlight might be...

Vision impairment is common in humans, so why not the rest of the animal kingdom?