The past is the key to the future. When snow falls on polar ice sheets, in Greenland and Antarctica for example, air is trapped between the snowflakes. Year after year, the snow compacts under its own…
Some critics of carbon pricing have pointed out that, over time, the carbon price will increase to a much higher level and devastate the economy. Indeed, the image of a python squeezing the life out of…
Greenhouse gas cuts pledged by developed countries will not be enough to stop temperatures rising by 2 degrees by 2100, according to Chinese researchers who argue wealthy nations should bear greater responsibility…
Cutting greenhouse gas emissions is like buying an insurance policy: we incur a cost to reduce a risk. Every year Australians spend millions on insuring homes, cars and their health, not because they know…
A catchment threatened by salinity can’t be repaired by one or two landholders. Revegetation designed to lower watertables has its greatest ecological benefit where the plants are, but its net impact on…
Severe droughts, floods and landslides devastated parts of the world last year as carbon dioxide concentrations climbed to the highest levels in recorded history, according to a global report on climate…
The two main political parties agree to reduce greenhouse gas emissions by 2020 to 5% below the 2000 level, or about a 20% reduction below business as usual. However, they propose very different policy…
Last week the world stopped to watch as the black disc of Venus inched its way across the face of the sun. But beyond the transits that capture our attention roughly twice per century, Venus has always…
If everyday items were labelled according to the carbon emissions embodied in them, would shoppers change what they buy? And if they did, would it make a difference in the grand scheme of things? Voluntary…
Update October 2012: The manuscript “Evidence of unusual late 20th century warming from an Australasian temperature reconstruction spanning the last millennium” by Joelle Gergis, Raphael Neukom, Ailie…
Australia’s greenhouse gas emissions increased by 0.6% year-on-year in the December quarter, despite a drop in electricity consumption - the largest source of emissions in the national inventory, figures…
There are many features of the design of the Gillard government’s controversial and complex carbon legislation that can be questioned. For example, Australia’s unilateral action; the two-phase carbon tax…
By now most of us have read articles suggesting we “eat less red meat and save the planet”. Some may also have heard statements by the chairman of the Intergovernmental Panel on Climate Change, Dr Rajendra…
What if the world left it too long to take action on global climate change? Is there a way we could somehow cool the planet before an environmental crisis occurs? Geo-engineering is a potential course…