A school in Kyiv, Ukraine, that was bombed by Russia on March 18, 2022.
AP Photo/Rodrigo Abd, File
Wars always include killings and destruction, but there are limits. An expert in international law explains the rules of war laid out in the Geneva Conventions − and why they’re so hard to enforce.
The International Space Station orbits Earth.
NASA/Roscosmos
The International Space Station is an engineering feat that has led to countless scientific discoveries. Like the thousands of satellites in orbit, it manages to stay up in the atmosphere.
The universe is full of stars, galaxies and planets − it’s expanding every day.
NASA/JPL-Caltech/University of Wisconsin via AP
The universe is constantly expanding, but how do scientists think about what it’s expanding into?
Nobody likes being told what to do, but a parent’s main job is to protect their kids.
VioletaStoimenova/E+ via Getty Images
The brain science behind the power struggle between parents and their children.
Workers at the drilling site for a geothermal energy plant in Neustadt-Glewe, Germany.
Jens Büttner/picture alliance via Getty Images
There’s a lot of hot rock in the way, and sooner or later your hole would collapse.
Your internal body clock can help wake you up without an alarm.
Riska/E+ via Getty Images
You can train your brain to wake up on time naturally.
This 2014 image of a tropical storm from the International Space Station clearly shows Earth’s curvature.
NOAA/Getty Images
It’s all about perspective: The higher you go, the more you can see the curve.
A photo of Jupiter taken by NASA’s Juno spacecraft in September 2023.
NASA/JPL-Caltech/SwRI/MSSS, image processing by Tanya Oleksuik
Jupiter’s composition is more similar to that of the Sun than that of the Earth.
Green pump for diesel, blue for gas – but what’s the difference?
Jeffrey Greenberg/Education Images/Universal Images Group via Getty Images
Both gasoline and diesel fuel are refined from crude oil, but they are good for different things and can’t be used interchangeably.
A zombie cicada fungus, Massospora cicadina , has consumed the rear end of this periodical cicada, replacing it with a ‘plug’ of chalky spores.
Matt Kasson
Be very afraid – if you’re an insect.
Seeking social change often requires collective action.
champc/iStock / Getty Images Plus
Communism, Marxism and socialism are all different economic and political ideas. As concepts, they all seek to move toward greater economic equality and public participation in democracy.
A clique is a group whose members spend a lot of time together.
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Belonging to a group can make you feel safe and supported. But there can be downsides, too.
Greg Rakozy/Shutterstock
We may never know – and the universe may not even have an edge. But here’s what we do know.
Keep the volume of your personal listening device at or below 60%.
vm/E+ via Getty Images
Listening to music and doing homework can be in harmony − as long as you turn down the volume.
One hemisphere has summer, while the opposite has winter.
Prasit photo/Moment via Getty Images
The tilt of the Earth and your distance from the equator are just 2 reasons why summer’s not year-round.
Phones that transmit odors seem like a great idea, but careful what you wish for!
Teo Mahatmana/iStock via Getty Images
Phones that transmit odors sound like science fiction, but researchers are working on making them real.
Students may have to rely on state laws for religious accommodations.
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Praying in school is protected by the Constitution but only under certain conditions.
Light from stars travels through space, which is mostly an empty vacuum.
William Attard McCarthy - McCarthy's PhotoWorks/Moment via Getty Images
While space is mostly empty, it does have some matter and particles spread throughout it.
Some people can visualize things perfectly in their mind’s eye, while others can’t.
designer491/iStock via Getty Images Plus
Here’s how your brain visualizes scenarios that you’re not actually looking at with your eyes.
Lava spatters from a vent at Kilauea in Hawaii during an eruption in September 2023.
M. Patrick, USGS, via NPS
We don’t generate power directly from volcanoes, but their presence is a sign that there are good geothermal resources underground that can be tapped.