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Articles on Curious Kids

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The Ringtail Unicornfish, which occurs in tropical marine waters of the Indo-Pacific. All fish sleep, even the weird-looking ones. Bernard Spragg/Flickr

Curious Kids: how do fish sleep?

Fish may not have eyelids to close, but they sleep – and perhaps even dream.
Stars come into existence because of a powerful force of nature called gravity. ESA/Hubble & NASA, Acknowledgement: Judy Schmidt

Curious Kids: how are stars made?

Stars begin their life inside very large, fluffy clouds of space dust and gas called nebulae.
Grant Elliott/Unsplash.

Curious Kids: why is the sea salty?

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

How deep is the ocean?

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.
Darwin wondered: what if species change over time in response to their environment? Shutterstock

Curious Kids: how do scientists know evolution is real?

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.
Blue whales and orcas are both specialists in their own way. You can’t really measure which one is more intelligent. Shutterstock

Curious Kids: which is smarter – a blue whale or an orca?

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.
The Parkes Observatory radio dish, the second largest telescope in the southern hemisphere, has a ‘multibeam’ receiver which can search 13 places in the sky simultaneously for signs of intelligent life. Shutterstock

Curious Kids: what has the search for extraterrestrial life actually yielded and how does it work?

The Universe is mind-bogglingly large and with the latest technology, the search is only just starting to heat up.

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