Forests and other land-based carbon stores held onto more carbon during colder historical climates.
When temperatures dipped between 1500 and 1750, the world's landscapes responded by storing more carbon. Now, with temperatures climbing, it's possible they will do the opposite and release even more.
Time to take a different road?
The world's use of finite resources continues to rise as global development continues. Can we help poorer nations raise their standard of living without exhausting all of our raw materials?
Computers are getting better at playing games such as chess.
Artificial intelligence gives us machines that can beat humans at games such as chess and go. How long before we see AI surpass human intelligence?
The 500-metre Aperture Spherical Telescope (FAST) is the largest single-dish radio telescope in the world.
You can't just buy a radio telescope receiver off the shelf. So CSIRO has been hard at work building receivers for the world's largest telescopes using the very latest technology.
Country of origin labels are a good move, but why stop there?
Australia’s new country of origin food labelling will indicate if food is grown or made in Australia and the proportion of Australian ingredients.
The silverlead whitefly is a major agricultural pest.
Invasive species and diseases pose a major threat to agriculture – particularly in the countries that can least afford it.
Some of the many species in the Australian National Insect Collection.
At least 100,000 insects are among the many Australian species still to be formally identified. That's a problem for any biosecurity experts who need to be able to spot potentially invasive bugs.
Intelligent machines are getting better at understanding our conversation.
Human communication is complex, rich in nuances and frequently includes non-verbal signs. That's a challenge if you want an intelligent machine to be part of the conversation.
Tasmania’s Cape Grim monitoring station passed a crucial carbon dioxide threshold this month.
Bureau of Meteorology
Atmospheric carbon dioxide measurements at Tasmania's Cape Grim and Antarctica's Casy Station have now officially passed 400 parts per million and are likely to stay above that for decades to come.
Moo-ve along: livestock are one of many threats to Australian freshwater ecosystems.
Freshwater covers only 0.5% of the Earth's surface but is home to 10% of the world's lifeforms.
The Solomon Islands are low-lying and vulnerable to changes in sea level.
Sea levels are rising faster in the Solomon Islands – and send a warning for the rest of the world.
Green planet: tropical rainforests have produced more growth in response to rising carbon dioxide.
NASA Goddard Space Flight Center/Flickr
Half of the world's vegetated land has got greener in the past 30 years, mostly driven by rising CO2.
Data about farms' financial situation as well as the weather could help identify those most vulnerable to drought.
Forecasting drought should be about more than weather – to help those likely to be hit hardest, we need financial and even health data too.
Tasmania’s bushfires damaged pristine bushland and stretched emergency services to the limit.
AAP Image/Patrick Caruana
This summer has seen Tasmania suffer through drought, bushfires, floods and the worst marine heatwave on record. Is this what life under a climate-changed future will be like?
Glacier melt is one of the major contributors to global sea level rise.
Glacier image from www.shutterstock.com
Global average sea level has risen by about 17 cm between 1900 and 2005, but we didn't know how much of that was due to us, until now.
CSIRO chief executive Larry Marshall fronts senate estimates in February.
AAP Image/Mick Tsikas
A proposal for the Bureau of Meteorology to take on CSIRO climate scientists is a good idea - but CSIRO needs to make sure nothing is lost.
Glaciers have been a major contributor to sea-level rise.
Could sea levels really rise by several metres this century. Probably not, although this century's greenhouse emissions could potentially set the stage for large rises in centuries to come.
Farming land in New South Wales.
Growing population, growing demand for food, climate change: Australia's rural lands are facing a number of pressures. So how can we sustainably use them in the future?
A diet like this isn’t particularly good for your waistline – or the planet.
Fast food image from www.shutterstock.com
Climate change will make it harder to eat healthily.
Livestock ‘digestion’ produces nearly 3 billion tonnes of greenhouse gases each year.
Cattle image from www.shutterstock.com
Eating less meat isn't the only solution to reducing greenhouse gas emissions from livestock.