Earlier this week, we had a close shave. An asteroid passed by the Earth at just 12,000 km. The distance between the Earth and the Moon is roughly 400,000 km. That is really, really close. The asteroid was between 5 and 20 km in diameter and probably would have burned...

Chile’s Puyehue Volcano began to erupt on June 4 of this year, and despite being 10,000 km away from the eastern states, wreaked havoc on Australian and New Zealand air travel. How did the cloud of ash manage to travel so far? The answer is trade winds.

As part of our Renewable Energy workshop today, I was asked why we can’t use the steam produced by the evaporation of liquid nitrogen to power a turbine and generate electricity. The short answer is economics –the amount of energy that would be produced by using liquid nitrogen to power...

Again we're heading out west for the 'Science in the Bush' series for the Australian Museum. As we headed out we couldn't help but stop and see the sites on the way...