Dinosaurs ruled the Earth for about 180 million years. But around 66 million years ago, a huge rock from outer space (called an asteroid) smashed into the Earth. Then things got worse for dinosaurs.
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As strange as it sounds, rocks are made from stardust.
Ladybirds do not have tails because they have no backbones.
A scientist explains how global warming is affecting the entire world – from the mountains, to the sea.
We know very little about the deep sea and how its inhabitants, including anglerfish, will respond to change. In fact, more people have walked on the Moon than have been to the bottom of the ocean.
I have been interested in the science of fire and fireworks for a long time, and can tell you there is a lot happening in the very short time it takes to light a match.
Gravity exists because the universe is full of ‘stuff’ – here’s how it came to be.
Some animals, such as ghost shrimps can even cope with water that is saltier than normal seawater. It’s all down to evolution.
Understanding our evolution can tell us a lot about the health challenges we face today.
Waves occur in all sorts of places, and it’s possible that waves you might see breaking at the beach are at the end of a very long journey.
All the buildings and the cars and the restaurants, and the phones and even everything that’s inside of you… it all started with an exploding star, billions of years ago.
Your teeth started to grow even before you were born.
A sigh is the brain’s way of stopping the tiny sacks in your lung from collapsing.
Even fridge magnets have magnetic fields approximately 200 times stronger than Earth’s.
It would be difficult, but we could probably build a tower over 2,000 metres tall, which would be like ten normal skyscrapers on top of each other! This is probably not a very good idea though.
Bushfires require three key ingredients to ignite: heat, fuel and oxygen.
The diameter of the Milky Way is a billion billion kilometres.
One thing I can tell you is that a snail’s bottom is right over its head.
It’s hard to believe, but big storms and hurricanes are caused by tiny particles moving around in the atmosphere.
Leaves fall off trees when they aren’t doing their job any more. If there isn’t enough water, the leaf can be damaged and stop working.
Top contributors
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Reader in Astrophysics, Keele University
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Associate Professor of Science & Medicine, Bond University
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PhD Candidate, University of Southern Queensland
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Professor (Astrophysics), University of Southern Queensland
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Associate Professor, Philosophy of Science, The University of Melbourne
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Lecturer, Centre for Astrophysics and Supercomputing, Swinburne University of Technology
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Researcher, The University of Melbourne
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Professor, Macquarie University
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Senior Teaching Fellow, Medical Program, Bond University
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Associate Professor, School of Animal and Veterinary Science, University of Adelaide
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Lecturer, University of Southern Queensland
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Senior Lecturer in Physics, University of New England
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Associate professor, Astronomy, University of Regina
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PhD Candidate, The University of Queensland
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Honorary Associate Professor, UNSW Sydney
