Gullies inside a Martian crater.
Have we been jumping to conclusions about water on Mars?
Despite a decade of drought and declining rainfall in parts of Australia, there’s still plenty of water to go around.
Maroondah reservoir from www.shutterstock.com
The Millennium Drought ended more than five years ago, but several years of below-average rainfall and El Niño have brought drought back to many parts of Australia. Our latest report on water in Australia shows rainfall is continuing to decline in eastern Australia and increase in the north.
‘Not a goosebump between us.’
While the Paris climate talks focus on technical fixes, no one talks about how we're much more afraid of roughing it than ever before.
Low food miles: a farmers market in Pennsylvania.
Food is a big part of everyone's carbon footprint – about the same as electricity use. How can our diet make farming more planet-friendly?
Ruin of a second-century public toilet in Roman Ostia.
Fr Lawrence Lew, OP
Archaeological and textual detective work is filling in some information about how ancient Romans used and thought about their sewers thousands of years ago.
A lone cow stands next to a dried up river in South Africa.
The water crisis in South Africa could have been avoided through better planning.
Tens of millions of smallholder farmers across sub-Saharan Africa have a stake in improving the health of the soil their cattle graze on.
Africa’s soil crisis calls for quick and creative action. This includes deepening farmers' knowledge about soil microbes.
The disease can only occur when contaminated water goes up into the nose.
Amoebas are ancient bugs that predate multicellular organisms that often hide in water and mud.
Australia can balance energy, water and food needs with the environment.
Wind turbine image from www.shutterstock.com
We have all the tools to achieve economic growth and environmental sustainability - we just have to choose to use them.
The Murray River in 2007, at the height of the drought. Hopefully it will be more resilient next time around.
Scott Davis/Wikimedia Commons
As El Nino looms, the Murray-Darling is facing another drought. But after almost a decade of investment in water trading and other policies, its prospects are better this time around.
17 mile regulator - a computer controlled flume gate - on the East Goulburn Main Channel Water.
With El Niño upon us and the prospect of water scarcity ahead, how well positioned are we to make accurate and timely decisions about water resources?
Despite the noble intentions behind charity wells, they may not be the best thing.
The digging of wells in Africa has often been thought of as the solution to helping rural women walking to get water, but they may cause more harm than good.
A disintergating asteroid caught in the gravitational pull of a white dwarf star: could this be the future fate of the Earth?
Mark A. Garlick
A study into a distant white dwarf could help us learn more about the future fate of the Earth – and it could be a violent one.
Photosynthesis is crucial to the ability of plants to convert sunlight into energy.
N i c o l a/Flickr
Distinguished Professor Graham Farquhar has received this year's Prime Minister's Prize for Science for his pioneering research into photosynthesis.
New surveys show Australians don’t mind if the water coming from their tap is recycled.
Tap image from www.shutterstock.com
Would you drink recycled water? New surveys suggest Australians concerned about water shortages are ready for alternative sources.
It’s impossible to know the quality of our groundwater unless we test it.
A new technique that uses lasers to determine the composition of groundwater is helping us protect that most precious resource.
Unlike science fiction films featuring grotesque aliens and faraway galaxies, Ridley Scott’s The Martian depicts a sci-fi space mission that could soon be science fact.
20th Century Fox
NASA has set a target date of 2030 for a manned mission to Mars. With no real scientific breakthroughs needed, success depends on developing the proper technology.
The dark streaks on Mars’ hills will be a good place to look for life.
Credit: NASA/JPL/University of Arizona
Water on Mars could mean life on Mars. But how do we explore it without destroying it?
This digital false-colour image shows the dark, narrow streaks on Martian slopes inferred to be formed by seasonal flow of water on the planet. The streaks are roughly the length of a football field.
Image Credit: NASA/JPL-Caltech/Univ. of Arizona
Now that we have discovered liquid water on the surface of Mars, what does this mean for the prospects of finding life there, past or present?
The new Labour leader has been pilloried for extolling public ownership. In fact, he's bang on trend.