Lava flows from a fissure in the aftermath of eruptions from the Kilauea volcano on Hawaii’s Big Island, May 22, 2018.
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Volcanoes might seem like nature’s incinerators, but using them to burn up trash would be dangerous and disrespectful to indigenous people who view them as sacred.
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A clue is in insects’ hairy feet.
Some places rarely see the sun.
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Extended periods of rain are most likely found in locations where mountains are near oceans.
The greater shortnosed fruit bat.
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A bat’s body is really good at tolerating diseases.
Brown poop can indicate good health.
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The answer is more complicated than you might think. It has to do with how your body gets rid of old red blood cells.
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Scientists are studying fires in Africa at different times of year to see how the smoke from these fires changes over the year.
We have only sent people to the Moon six times so far.
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A space station on the Moon could be built out of lunar concrete.
You never know where Uncle Sam will make an appearance.
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The iconic image may have originated with a meat supplier named Samuel Wilson. Or not.
Michael Lee
Crocodiles can survive without food for a long time – even up to more than a year – because of how well they can save their energy.
For almost as long as there have been computers, there have been video games.
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Video games are everywhere. So who was the first person to come up with the idea of playing a game on a computer screen?
There’s a lot we don’t know about galaxies.
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We have to look back to the Big Bang to find out.
An illustration shows how, about 65 million years ago, a large asteroid collided with Earth. It hit what is today Mexico and created the Chicxulub crater.
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Impact craters are relatively shallow, so these bowl-shaped “dents” in Earth’s rocky crust can be easily buried or erased by erosion.
A dairy barn in Waitsfield, Vermont, built circa 1890.
Thomas Visser
Barns are practical buildings, designed to safeguard farm animals and equipment. Why are so many of them painted to stand out from the landscape?
It only takes light about eight minutes to go from the Sun to Earth.
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The fastest things ever made by humans are spacecraft, and the fastest spacecraft reached 330,000 mph – only 0.05% the speed of light. But there are ways to go faster.
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Our brain is amazing. It tells us when we need to drink more water. And one of the ways it tells us is to make us feel thirsty.
The land surface heats up during the day because of solar radiation coming in from the sun.
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This is a really important question, and one which climatologists work on in many aspects of their jobs.
A fly regurgitating digestive juices.
Carlos Ruiz
A fly does some of its digesting outside its body before it even eats any food.
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It can get very cold in space.
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Energy isn’t really made of anything else. It’s a kind of capacity to do things
Three upright walkers, including Lucy (center) and two specimens of Australopithecus sediba , a human ancestor from South Africa dating back nearly 2 million years.
Image compiled by Peter Schmid and courtesy of Lee R. Berger/Wikimedia Commons
Walking has taken a very long time to develop, with evidence of bipedalism among early humans in Africa roughly 4.4 million years ago.