Dr. Mona Hanna-Attisha, right, on Capitol Hill in Washington, in February . 2016.
AP Photo/Andrew Harnik
Whistleblowers may stop bad behavior and protect others from harm.
Keep those stinkers away!
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Sweaty feet and certain cheeses have something in common that makes them reek – can you guess what it is?
The Ringtail Unicornfish, which occurs in tropical marine waters of the Indo-Pacific. All fish sleep, even the weird-looking ones.
Bernard Spragg/Flickr
Fish may not have eyelids to close, but they sleep – and perhaps even dream.
You don’t actually need language to think.
bluelela/Shutterstock.
Language can express some of the results of our thinking, but it’s not the thinking itself.
The ripple effect.
Forance/Shutterstock.
The simple experiment of throwing a rock into water actually reveals some fundamental rules of physics.
Optical illusions use colour, pictures and shapes that can make our brain and eyes confused.
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Sometimes our brain gets confused and misunderstands what the eyes tell it.
Magic mine/Shutterstock.
A scientist explains how the brain works, for younger readers.
Stars come into existence because of a powerful force of nature called gravity.
ESA/Hubble & NASA, Acknowledgement: Judy Schmidt
Stars begin their life inside very large, fluffy clouds of space dust and gas called nebulae.
Swallowing a lot of gum can cause it to stick together or stick to food in your gut.
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Swallowing a lot of gum can cause it to stick together or stick to food in your gut.
Does music usually put you in a better mood? That might help you try a little bit harder and stick with challenging tasks.
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Research suggest it’s probably fine to listen to music while you’re studying - with some caveats.
You might be daydreaming, but your brain is hard at work.
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Your brain balances messages coming from lots of different places to help you see, imagine, remember and dream.
A pitcher tries to throw a ball past a batter.
AP Images/Eric Gay
In baseball, a pitcher can throw a ball that seems to curve away just as it crosses the plate. How do they do it? It’s all about aerodynamics.
Grant Elliott/Unsplash.
The salt in the sea has built up over billions of years – but it wouldn’t have got there without freshwater rivers and streams.
The remotely operated vehicle Deep Discoverer captures images of a newly discovered hydrothermal vent field in the western Pacific.
NOAA
In some places, the ocean is almost 7 miles deep. Scientists exploring the ocean floor have found strange sea creatures, bizarre geologic formations and records of Earth’s history.
Change is tough for everyone.
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Puberty can make us behave differently.
Alex Iby/Unsplash.
Light bulbs can turn electricity into light (and a bit of heat) – an expert explains how they do it.
Give yourself time and you can see in the dark.
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Just the tiniest bit of light can let you see in the ‘dark.’ Here’s how your eyes do it.
Darwin wondered: what if species change over time in response to their environment?
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In science, we look at the evidence and try to find the theory that best explains it. And that’s what happened when it came to figuring out evolution.
In the future, people may be able to go to Mars.
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The first Martian might just be a human being.
Blue whales and orcas are both specialists in their own way. You can’t really measure which one is more intelligent.
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We don’t know for sure which one is smarter, because not everyone agrees on what “intelligence” means. Both have their own special behaviours and skills and we can’t say who is more intelligent.