The spread of diseases is akin to a maze of toppling dominoes.
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Epidemiologists focus on diseases among groups of people. They also study the spread of disease among animals.
Chipmunks have a superpower: hibernation.
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Squirrels and chipmunks are distant cousins who have grown a little more apart from each other over millions of years.
Dangerous winds batter the south coast of England.
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Wind travels all over the world. Where does it come from, and why?
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Research shows that looking at your dog makes you feel happy.
Every known culture on Earth has special words for kids to call their parents.
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One anthropologist found 1,072 similar words for ‘mom’ and ‘dad’ in the world’s languages. It turns out a mix of biology, culture and encouragement from parents explains this phenomenon.
It would be fun to be able to shrink people and objects, but it’s something we can only imagine.
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The movies make it seem like someday we’ll be able to make people and objects grow really big or shrink really small. Whether this will be possible comes down to the smallest of things.
Robson, 1925, collected 2008, Ross Sea, Antarctica. Gift of the Ministry of Fisheries, 2007. Te Papa (M.190318)
Colossal squid have eyes the size of soccer balls, and can weigh up to 700kg. That’s a lot of calamari!
No one knows what kicked off the Big Bang that eventually allowed the stars to begin forming.
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The term ‘Big Bang’ might make you think of a massive explosion. Put the thought out of your head. Rather than an explosion, it was the start of everything in the universe.
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Whether our brain decides to wake us or let us keep sleeping depends on the loudness and type of sound, our depth of sleep and sensitivity to noise.
Even in quarantine, people around the world have to walk their dogs.
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Pets might not protect us from the coronavirus, but they can help us get better.
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It is very hard to stop wars, but we must try.
Cold and sweet in the heat.
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Have you ever felt a piercing pain in your head when you eat something cold?
A Furcifer pardalis (panther chameleon) sleeps in a tree in Madagascar.
Mark D. Scherz
All chameleons are able to change colour at least a little bit, but some species can do it much more than others.
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When we yell, our vocal cords bash together extra hard, causing them to get sore and swollen. The swelling can develop over a few hours so you might notice hoarseness more the next day.
A natural color image of Pluto taken by NASA’s New Horizons spacecraft in 2015.
(NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Alex Parker)
A young reader asks: Is Pluto a planet?
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Grownups don’t get taller, but they can grow in other ways.
Some wasps are social insects, meaning they live in groups and have a queen.
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Bees aren’t the only species that has a queen.
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Our bodies are made up of cells that multiply to repair our organs. But organs like our liver and skin are better at regeneration than our brain.
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A mass extinction 66 million years ago killed the non-bird dinosaurs, but plants survived.
Depending on where you’re from, you say words like ‘basil’ a specific way.
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Accents differ depending on where we’re from, even in the same country.