Menu Close

Climate change – Analysis and Comment

Global land-surface temperatures are up, but it’s not really news. Stuart Dowell

On global temperatures, Berkeley’s BEST is similar to the rest

The Berkeley Earth Surface Temperature (BEST) study recently found that global land-surface temperatures have increased by about 1°C since the 1950s — and 1.5°C since the mid-18th century. These results…
Australians generally accept that the climate is changing, but we have lost confidence in politicians, experts, and the media to guide us in what to do about it. Flickr/spodzone

Reading the Climate of the Nation 2012

Over the past several decades, scientists have studied the climate of the world and how that is changing. These studies have built on the recognition, made over 150 years ago by John Tindall, that certain…
Tree rings from around the time of Christ suggest warmer regional temperatures than those between the 1950s to the 1980s, but this does not imply higher mean global temperatures. Flickr/Petrified Forest Ranger

On tree rings, CO2 levels and the Pliocene

A study of tree-ring data recently found that in some regions temperatures during Roman times (21AD to 50AD) were 1.05 degrees Celsius higher than the 1951-1980 mean. The paper’s lead author, Professor…
Relax and have a drink, old chap; the planet has managed to look after itself so far without any fuss. Flickr/cyclonebill

Climate change and the soothing message of luke-warmism

We are familiar with the tactics, arguments, and personnel of the denial industry. Yet there is a perhaps more insidious and influential line of argument that is preventing the world from responding to…
Sign of things to come: a depleted Lake Hume in 2007, when the big dry still had a couple years to run. Flickr/Tim J Keegan

Climate change and Victoria: high time to innovate, adapt, and cope

Victoria has entered a critical decade in the race to adapt for the stresses of climate change, according to a new report from the Climate Commission. Following the release of Victorian climate impacts…
Economic modelling shows Australia’s GDP will be modestly affected by the carbon tax in the long term: but the equitable redistribution of tax revenue will be critical. AAP

The carbon tax: insurance against climate change?

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…
Landcare get-together: reducing our toll on nature comes in part from many of us taking steps that individually are not always so big, but which accumulate. The carbon tax is one such step. Flickr/feral arts

Little by little: the benefits of Australian climate policy

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…
Former politician and economist John Hewson speaks to ANU’s Crawford School’s Bruce Chapman and Daniel Connell.

John Hewson: tax reform doesn’t just mean lowering taxes

Welcome to the latest in our In Conversation series, between former politician and economist Dr John Hewson, Australian National University (ANU) Crawford School Director of Policy Impact Professor Bruce…
What does it matter how much rain falls on the ocean? For understanding climate, it matters quite a lot. Ines Hegedus-Garcia

Are the world’s wet regions becoming wetter and dry regions becoming drier?

Surprising evidence from the oceans suggests they are responding to warming at a faster rate than we previously thought. These changes are expressed by patterns of freshening and enhanced salinity in the…
Climate change is only one of many pressures farmers will have to adapt to. Pete Hill

The three Ps of climate change and agriculture

Opinions on anthropogenic climate change vary greatly across society, and it appears that Australia’s farmers remain largely sceptical about the causes of climate change. Recent surveys show that only…
Tony Abbott has pledged to repeal the carbon tax, but it may be more difficult than he thinks. AAP/David Crosling

Tony Abbott cannot escape the international climate game

What’s in a name? Well, like “Montague” and “Capulet” in Shakespeare’s play, names matter quite a lot in the tribal world of Australian climate politics. The notion of a “carbon tax” has struck a raw nerve…
This is carbon. The carbon you keep hearing about on the news is probably carbon dioxide. It doesn’t look like this. Rui Costa

What is ‘carbon pollution’ and why are we trying to stop it?

You’ll doubtless have heard Australia is introducing a “carbon tax” this Sunday to reduce “carbon pollution”. What is being controlled is not just any carbon but emissions of a specific gas, carbon dioxide…
International organisation 350.org encourages the building of grass-roots movements to combat climate change. 350.org

Building the new economy: alternative strategies for the 99%

Bob Massie, CEO of the New Economics Institute opened the recent Strategies for a New Economy conference, held at Bard College, New York with a thoughtful response to the criticism that the Occupy movement…
Sometimes even the clearest signs of change are ignored. Flickr/baldeaglebluff

Adapting to climate change: more questions than answers!

With increasing global greenhouse gas emissions, and no clear internationally-agreed path for emission reductions, we are faced with a global climate that will be at least two degrees warmer than today…
Big, ambitious strides aren’t the way to escape from this mess. EPA/Zsolt Szigetvary

Rio+20: Small steps could get us out of the climate quicksand

Yesterday, Nick Rowley looked at the history of sustainability agreements and why we’ve reached the impasse of Rio+20. Today he suggests a different approach. Back in November 2005, your perspective on…
Vulnerable people and places are worst affected by weather-related disasters, especially those most reliant on the land. Chaim Zvi

Disasters and mental health in rural and remote areas

Mental health problems cause profound suffering and are worthy of attention for that reason alone. But despite policy and service reform, such problems remain as common, expensive and disabling as they…
Elinor Ostrom, the only woman to have won a Nobel prize for economics, was most famous for challenging the idea of the “tragedy of the commons”: that in the absence of government intervention, people will overuse shared resources. acschweigert

The grand philosopher of the Commons: in memory of Elinor Ostrom

The grand philosopher of the Commons, Elinor Ostrom, passed away on the 12th June 2012. She was a brilliant, creative polymath; a theoretician of fine precision and great intellectual power; a deviser…
Farmers are adept at using science to deal with all kinds of challenges, but they have their doubts about climate change. Jeff Pang

Can Australian farmers take on the challenge of climate change?

Farmers are some of the most innovative Australians - since 1970 they have lost 7.5% of arable land, but they’ve found ways to increase production by 220%. They’re also some of the most conservative, expressed…
Darkness visible: we’re driving animals to extinction, burning through resources, and throwing out natural balances, yet consumption still reigns. Flickr/NASA's Marshall Space Flight Center

State of the future: challenge one; sustainable development and climate change

State of the Future 2012, a quick introduction What is the “state of the future”? How successfully are we tackling global challenges threatening our collective future? These questions are asked annually…
The recent climate-related deaths of tracts of Western Australian forest go beyond a green issue. George Matusick

Western Australia’s catastrophic forest collapse

Recent, unprecedented, climate-driven forest collapses in Western Australia show us that ecosystem change can be sudden, dramatic and catastrophic. These collapses are a clear signal that we must develop…
Back, sperm, back: a human egg on the tip of a pin. Flickr/wellcome images

Squaring up to difficult truths: how to reduce the population

Elephants in the room, part two For all our schemes and mantras about making our lives environmentally “sustainable”, humanity’s assault on the planet not only continues but expands. What are the deep…