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Last updated: Thursday, 2 October 2008What's new

Ask an Expert How much of hunger is hormonal?

How much of hunger is hormonal and how much is linked to the nervous system? What are the receptors and how do they act? read more 'How much of hunger is hormonal?'

Man eating a burger

A still from an animated Illustration of the Phoenix Lander arriving at Mars Phoenix finishes Mars operation

StarStuff Podcast NASA's Phoenix Lander mission draws to an end; the International Space Station gets an 'Endeavour' makeover; lunar touchdown for India; and Pluto's new horizon.more'Phoenix finishes Mars operation'
Thursday, 20 November 2008

Regrowth mystery reborn

Great Moments in Science If you're only as old as you feel then are you as old as your body? The idea that body cells regrow every seven years should be an accurate guide, right? Wrong! Dr Karl can sense it in his bones.more'Regrowth mystery reborn'
Tuesday, 18 November 2008

A male sea spider carries eggs it has fertilised on specially adapted appendages under its body. This spider is one of many possible new species from the Antarctic, some of which may grow up to the size of dinner plates.Inhabitants of the deep

Photo Gallery Our oceans cover more than 70 per cent of our planet, yet we know very little about the creatures that live in them. Take a look at some of the amazing animals identified as part of the Census of Marine Life.more'Inhabitants of the deep'
Friday, 14 November 2008

Coccinella transversalis, a native Australian ladybird.Participate in Catalyst's National Ladybird Survey

Survey Grab your camera, get out into the backyard, or local park and take pictures of the ladybirds in your area. We will publish them on our ladybird map and you could even win a prize for your efforts.more'Participate in Catalyst's National Ladybird Survey'
Thursday, 13 November 2008

A Golden Age of Freedom

Boyer Lectures Rupert Murdoch beholds a period of great transformation that will bring prosperity to billions around the world. This golden age of freedom will unleash a new global middle class. Markets, media and technology will all play their part.more'A Golden Age of Freedom'
Friday, 14 November 2008

A sungrazing comet heading right for the Sun. It disintegrated the next day.Why don't all comets fall into the Sun?

Ask an Expert How is it that these relatively tiny objects (compared to the Sun) can travel such huge distances and yet orbit the Sun rather than be swallowed by it?more'Why don't all comets fall into the Sun?'
Thursday, 06 November 2008

Artist's impression of the central engine of a gamma-ray burst, a powerful jet of radiation and fast-moving particles blasts its way out of the central region of a dying star.Swift catch of distant gamma-ray burst

StarStuff Podcast NASA satellite detects the farthest gamma-ray burst ever; a new study of black holes raises more questions than answers; and new data on the Moon's volcanic history.more'Swift catch of distant gamma-ray burst'
Tuesday, 11 November 2008

Deaf cats draw a blanc

Great Moments in Science Black cats have a reputation for bad omens, that's hocus-pocus and hard to prove. But white cats also present a riddle that Dr Karl found easier to solve.more'Deaf cats draw a blanc'
Tuesday, 11 November 2008

Ophthalmologist

Ace Day Jobs Matt Ball has dedicated 16 years of his life to help people around the world overcome blindness and eye health problems. Watch Ace Day Jobs to find out how he became an ophthalmologist.more'Ophthalmologist'
Thursday, 06 November 2008

Could relying more on renewable sources like wind be the answer to our greenhouse gas woes?Clean Energy Quiz

Quiz We're always told we need to reduce our greenhouse gas emissions and look for cleaner sources of energy, but how much do you really know about some of Australia's future energy options?more'Clean Energy Quiz'
Friday, 31 October 2008

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