Maths to answer big questions (it’s not always 42)

Many of today’s big questions can only be answered with new mathematical and statistical tools.

That’s what the ARC Centre of Excellence for Mathematical and Statistical Frontiers are working on, and they’re finding real-world applications in areas as diverse as:

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Supercharged rice to feed the world

The discovery of C4 photosynthesis at a Brisbane sugar refinery 50 years ago spawned a whole new field of plant biology and is now well on the way to feeding the world.

Professors Bob Furbank and Susanne von Caemmerer are two of the scientists involved in creating ‘supercharged’ rice to feed the world. Credit: James Walsh, ANU
Professors Bob Furbank and Susanne von Caemmerer are two of the scientists involved in creating ‘supercharged’ rice to feed the world.
Credit: James Walsh, ANU

Three billion people rely on rice for survival, but C4 plants like maize and sugarcane grow faster, have higher yields, and are more drought-tolerant.

“C4 plants photosynthesise faster thanks to a biochemical ‘supercharger’ that concentrates CO2 in specialised structures in their leaves,” says Professor Bob Furbank from the ARC Centre of Excellence for Translational Photosynthesis.

“If we can modify rice to use the C4 pathway, instead of C3, we can improve rice production and double its water efficiency.”

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Who cares about the blobfish?

Hugh Possingham and his team are making conservation more efficient. They’re helping to save less fashionable threatened species by getting more bang for the bucks donated to cute and cuddly species.

The team of ecologists and mathematicians in the Australian Research Council Centre of Excellence in Environmental Decisions (CEED) worked with the New Zealand government to assess how to better spend money that is donated to conservation. They’ve shown that by protecting habitats shared by several different species, the money donated to charismatic ones can be stretched further to save other species as well.

Could this koala help save less cute species? 9credit: Liana Joseph
Could this koala help save less cute species? (credit: Liana Joseph)

“The way we currently attempt to save species is inefficient, choosing species that are popular or charismatic, like koalas and tigers, over those that are less well known or even ugly, like the blobfish,” says Hugh, ARC Laureate Fellow and Director of CEED.

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Terry Speed: fighting cancer by the numbers

Terry Speed doesn’t expect to see headlines reading “Statistician cures cancer” any time soon. But he knows that maths and stats can help researchers understand the underlying causes of cancer and reduce the need for surgery.

Terry Speed. Credit: WEHI

A mathematician and statistician, he has written elegant theoretical papers that almost no-one reads. But he has also testified in court, helped farmers and diamond miners, and given biologists statistical tools to help them cope with the genetic revolution.

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From sea snails to electronic free circuits

Sea snails and sponges are shedding light on how to create electronic-free circuitry and environmentally friendly optical fibre, say Geelong scientists.

The structure of a sea snail’s mother-of-pearl layer suggests how to channel light.

Inspired by the materials these sea creatures make, an Australian-US team is trying to create 3D gold nanoparticle arrays that channel light.

“Effectively we are creating circuitry without electronics,” says Tiffany Walsh, Veski Innovation Fellow and one of the researchers from Deakin University.

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Academy recognition

Photo: Wouter Schellart’s geodynamics research into the activity of the Earth’s mantle, including the Mt Etna volcano, earned him the AAS Anton Hales medal for Earth Sciences. Credit: NASA

The Australian Academy of Science recognised five individuals for their career achievements in 2013.

A new art form from nanotech

Science and art have combined to bring hand-drawn content for holographic TV and other 3D display technologies a step closer, thanks to research at the Australian National Fabrication Facility’s NSW node (ANFF-NSW) at the University of New South Wales (UNSW).

Paula Dawson’s work may help to deliver holographic TV and 3D display technologies – represented with an artist’s impression. Credit: Paul Henderson-Kelly

Unlike the traditional method of making a hologram—which involves reflecting a laser off a real object—the new technique simulates objects within computer software. In a recent test, a virtual, digital hologram file was produced and etched as a 3 mm-wide nanoscale pattern onto a glass plate using ANFF-NSW’s Electron Beam Lithography facility. When laser light was shone through the glass, a 3D hologram sprang into life.

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