The reason bigger objects in space are round and smaller ones aren’t boils down to gravity. And it’s the same reason mountains on Earth can only grow to a certain height
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Don’t share your toilet with your pet, or treat your toilet like a flushable garbage bin. It could lead to dangerous diseases, and clog sewer pipes.
In the blue corner is the extremely venomous Black Mamba – top snake of Africa – and in the red corner is the muscular Inland Taipan – Australia’s alpha snake.
In 1887 Queensland’s chief weatherman Clement Wragge began naming tropical cyclones, using names from the Greek alphabet, fabulous beasts and politicians who annoyed him.
Water crystals help drought-proof plants. But these tiny polymers are leaving gardeners concerned.
Finding a mate is of course essential to produce the next generation. And feathers and fur play key roles in making sure that happens.
Pluto has a density between that of rock and ice – so that immediately suggests the dwarf planet is made of a mix of both. But how do we know?
As we get older, there are many reasons our muscles might feel stiff. The most important thing is to keep moving.
No country can lay claim to sovereignty over a planet, moon or rocky body. But in the absence of clear laws regulating mining in space, it’s a case of first in, best dressed for resource extraction.
Compared to Earth, more “oomph” is required to bring magma to the surface of Mars, and this is probably why we haven’t seen any recent eruptions on the red planet.
If you fall one storey, dust yourself off – you’ll be fine. If you fall seven storeys: sorry, but you’ve probably got about 2 seconds to prepare to meet your maker.
Many people have an appearance of dark circles on the lower eyelids, and they have many different causes.
Eggs are tiny wonders, but even wonders can go wonky sometimes. We look at everything from double-yolkers to eggs with no shell at all.
It’s all about the chemistry. Adding lemon can enhance the flavour and enjoyment of tea, and change its colour, but its best not to expect any extra boosts to your health.
Whether or not masks can protect against invading or escaping bugs depends on the type of mask and material.
The internet conspiracists are half right: most lights we have inside do emit UV, but not enough to harm us.
The umbilical cord drops off a baby’s belly button after birth. What happens on the inside is far more fascinating.
There are a few reasons why smartphones, tablets and PCs start to seem less snappy over time.
Chicken eyes are stranger than you think: they can look up and down at the same time.
A reader wants to know why our noses run just because it’s cold.
Top contributors
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Senior Instrument Scientist, Australian Nuclear Science and Technology Organisation
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Lecturer in Ornithology, Ecology, Conservation and Parasitology, Charles Sturt University
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Associate Professor of Dermatology, Bond University
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Senior Lecturer in Physics, Western Sydney University
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Lecturer in Software Engineering, Monash University
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Infectious Diseases Fellow, Monash University
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Associate Professor, Animal Anatomy and Physiology, Charles Sturt University
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Associate Professor in Biology, Zoology and Animal Science, Western Sydney University
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Lecturer/Group Leader, Macquarie University
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David King is a Friend of The Conversation.
Senior Lecturer in General Practice, The University of Queensland
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Senior Lecturer, Institute of Health and Wellbeing, Federation University Australia
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Professor of Midwifery, Associate Dean Research and HDR, Midwifery Discipline Leader, Western Sydney University
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Senior Lecturer, Infectious Diseases Epidemiology and Control, UNSW
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Honorary Associate Professor, University of Leicester
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Professor, Adelaide University