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Wednesday, 14 March 2012
Why are rising CO2 levels caused by burning fossil fuels?
How fast are carbon dioxide levels in the atmosphere rising? How can you tell that rising carbon dioxide levels are caused by burning fossil fuels and not natural causes such as bushfires, volcanoes, rising ocean or soil temperatures?
Why is the sea rising at different rates around Australia?
Wednesday, 14 March 2012
How big is the universe?
How will the Square Kilometre Array telescope work?
Can we expect to see lots of auroras this year?Science forums
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Do I need sunscreen on a day with extreme UV levels if it's cloudy?
Tuesday, 24 January 2012 7
comments
It's been pretty overcast lately but I noticed that the UV index rating on the daily weather forecast is extreme. Wouldn't clouds make the UV index lower?
Why don't we build spinning spaceships that create artificial gravity?
Tuesday, 10 January 2012 24
comments
I always thought the idea of a rotating space station would neatly get around the problem of no gravity, by artificially creating it by spin. Yet none of the current spacecraft designs include this feature. Why has this simple solution been abandoned?
Is time travel possible? (How does Santa do it?)
Wednesday, 21 December 2011 27
comments
How does Santa manage to deliver presents to the world in just one night? Could he be using time travel?
Should vinegar be used on all jellyfish stings?
Tuesday, 13 December 2011 5
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Does vinegar work for all jellyfish stings? And how does it work?
Could a solar flare wipe out life on Earth?
Wednesday, 23 November 2011 6
comments
I was watching a movie where a super solar flare was about to enter the Earth and destroy all living things on the planet. Could this happen?
Why are there 24 hours in a day?
Tuesday, 15 November 2011 24
comments
We divide the day into 24 hours, one hour into 60 minutes and one minute into 60 seconds. What other comparably accurate methods have been used throughout history?
Why are some beaches more golden than others?
Monday, 31 October 2011 6
comments
On a recent holiday to Noosa I noticed how much more 'golden' the beach sand is compared to WA's beaches. Why is the sand so different in colour?
What causes women to have menopausal hot flushes?
Tuesday, 18 October 2011 21
comments
I know hot flushes are common for older women, but what are they caused by?
If evolution is real why are there still monkeys?
Tuesday, 4 October 2011 17
comments
How can we be descended from monkeys if there are monkeys around today?
Why do some people hate the taste of broccoli?
Wednesday, 21 September 2011 14
comments
I have always wondered why things taste bad to some people. For example, I like the taste of broccoli but my wife can't even swallow it.
Why don't people stutter when they can't hear themselves speaking?
Tuesday, 6 September 2011 5
comments
Why don't people stutter if they're listening to music while they read out loud?
How can galaxies collide if the universe is expanding?
Tuesday, 23 August 2011 14
comments
If the universe is expanding and galaxies are moving away from each other, why do astronomers say the Milky Way and Andromeda galaxies are going to collide?
Have we always multi-tasked?
Wednesday, 17 August 2011 3
comments
Have new technologies like mobiles, tablets and laptops turned us into multi-tasking masters?
Are women better multi-taskers than men?
Thursday, 11 August 2011 3
comments
Are women better at multi-tasking than men? And does being a parent improve your ability to do more than two things at once?
How does space dust affect our view of the night sky?
Thursday, 28 July 2011 2
comments
I've heard it said that without interstellar dust to obscure starlight that the night sky would be ablaze with light. Is this true?
