Keeping things cold wastes a massive amount of energy. What if this could be harnessed?
No matter how hard we dig, the Earth’s resources are ultimately finite.
Mining image from www.shutterstock.com
Even supposedly "green" technologies such as renewable energy require materials, land and solar exposure and cannot grow indefinitely on this planet.
Australia’s universities are great at green innovation, but not so good at going low-carbon themselves.
University research has shown us how urgently we need to reduce greenhouse emissions. Yet only three Australian universities have followed through by committing unequivocally to cutting carbon.
China’s President Xi Jinping at the podium at the World Economic Forum in Davos, Switzerland.
AP Photo/Michel Euler
Leaders are worried US leadership on global issues like climate change will be diminished under President Trump. Experts explain why China is ready to lead, and how that could be a good thing.
Can coal be part of Australia’s efforts to reduce greenhouse gas emissions?
Coal image from www.shutterstock.com
The idea of clean coal has been around for 40 years, but remains a pipe dream.
Upgrading our fuel rules can deliver some easy wins for emissions.
AAP Image/Paul Miller
Australia's plan to bring fuel efficiency standards up to par with the US and Europe could see us say goodbye to regular unleaded, and hello to a useful way of cutting our rising greenhouse emissions.
An Arctic iceberg, pictured in 2015. This year, ice coverage has reached record lows for the early northern winter.
The end of 2016 has brought balmy Arctic temperatures and record low ice extent for the time of year. It's a freak event even by modern standards, and climate models point the finger firmly at humans.
Rice paddies are one of the major sources of methane in agriculture.
Methane concentrations in the atmosphere are growing at a faster rate than any time in the past 20 years.
Artist’s impression of an ice age.
The Earth's orbit has driven ice ages in the past but those days could be over.
Different foods have different amounts of greenhouse gases embedded in their production.
Food image from www.shutterstock.com
The food we eat is responsible for almost a third of our global carbon footprint.
Cape Grim, on the northwest tip of Tasmania, is exposed to some of the cleanest air in the world.
CSIRO/Bureau of Meteorology
Cape Grim's air pollution station has recorded some of the biggest changes to the world's atmosphere over the past 40 years.
Sharks: playing their part in reducing climate change.
Poor management of the oceans, including the killing of crucial marine predators, could result in more greenhouse gasses.
While action on air pollution is welcome, there may be better ways to cut car emissions.
Yallourn Power Station in the Latrobe Valley is one of the emissions intensive power stations that remains open.
AAP Image/David Crosling
Environment and energy minister Josh Frydenberg said that eight out of Australia's 12 most emission intensive power stations closed in the last five years. Is that right?
With the right help, ARENA can help deliver many more solar farms.
AAP Image/Lukas Coch
The Australian Renewable Energy Agency has survived, amid a groundswell of domestic and overseas support. Its budget has been chopped, but here's how it can still drive the renewable energy revolution.
The Climate Change Authority’s latest report has divided its membership.
Two members of the Climate Change Authority offer an alternative view on its latest report, arguing that the recommendations are not in line with Australia's international climate obligations.
What does it mean to be a citizen in today’s world?
Christopher Kennedy / Cassie Thornton
Civic intelligence describes what happens when people work together to address problems efficiently and equitably. It could help address many societal challenges.
The suggested new scheme aims to cut emissions from the electricity sector while sidestepping the political poison of increased power prices.
AAP Image/Julian Smith
A new "toolkit" of suggested climate policies looks politically feasible, but it's too complicated and not ambitious enough to drive a real move to a low-carbon economy.
Britain, one of the European Union’s most consistent backers of climate action, is poised to walk out.
AAP Image/Newzulu/Paul Alfred-Henri
Britain was among Europe's most progressive voices on climate policy. Its imminent withdrawal leaves the European Union grappling with voices of dissent from member states such as Poland.
The Greens are the party of climate action - but do they embrace enough technologies to get there?
AAP Image/Julian Smith
The Greens have successfully cast themselves as the party of climate science. But to hit their climate goals they may need to become even more radical, by embracing technologies like nuclear power.