Tag Archives: Macquarie University

More safe havens for native plants and animals needed in NSW’s west

Location matters for species struggling to survive under a changing climate.

A new study led by Macquarie University has found we need to provide more safe havens for wildlife and plant species to survive under climate change in New South Wales’ west.

Along the Great Dividing Range, the vulnerable spotted-tailed quoll will be forced to move into higher habitats as the climate changes, but can find sanctuary in protected areas like Kosciuszko National Park.

The squirrel glider, also listed as a vulnerable species, will have more suitable places to live under climate change. However, few of its potential new homes in central western New South Wales are adequately protected.

Continue reading More safe havens for native plants and animals needed in NSW’s west

Making light work

Australian and French researchers are teaming up to use photonics—the quantum technology of light—to build better environmental sensors and high-speed data transmitters, and enable sharper MRI scans.

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Reinventing the laser

High-power lasers have many potential applications: from medical imaging to manufacturing, shooting down drones or space junk, or powering deep space probes. But current laser technologies overheat at high power.

Associate Professor Rich Mildren and his team have developed a technique to make diamond lasers that, in theory, have extraordinary power range. Five years ago, their lasers were just a few watts in power. Now they’ve reached 400 watts, close to the limit for comparable conventional lasers.

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Protecting surfers from shark attacks

Macquarie University researchers discovered that most sharks are colour blind, and used that knowledge to create patented wetsuit camouflage designs that are now on the market. Now the team is looking at how sharks perceive surfboards.

Associate Professor Nathan Hart, his students and collaborators are taking a new look at the sensory world of sharks. Using a range of physiological, genetic and behavioural methods, they have obtained the clearest view yet of how sharks, including notorious predators such the great white shark, see the world around them. 

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Modern humans were in Southeast Asia 20,000 years earlier than previously thought

Dating of ancient human teeth discovered in a Sumatran cave site suggests modern humans were in Southeast Asia 20,000 years earlier than previously thought.

The international research, led by Dr Kira Westaway from Macquarie University and published in Nature, has pushed back the timing of when humans first left Africa, their arrival in Southeast Asia, and the first time they lived in rainforests.

Continue reading Modern humans were in Southeast Asia 20,000 years earlier than previously thought

The mystery of leaf size solved

Why is a banana leaf a million times bigger than a common heather leaf? Why are leaves generally much larger in tropical jungles than in temperate forests and deserts? The textbooks say it’s a balance between water availability and overheating.

But it’s not that simple.

A global team of researchers, led by Associate Professor Ian Wright from Macquarie University, revealed that in much of the world the key limiting factor for leaf size is night temperature and the risk of frost damage to leaves.

Continue reading The mystery of leaf size solved

How to stop people entering floodwater

People continue to enter floodwater in vehicles and on foot, despite many knowing the risks.

Researchers from the Bushfire Natural Hazards CRC and Risk Frontiers, Macquarie University, analysed the who, when and why of flood fatalities, so they could target information to high-risk groups and hopefully prevent further deaths. Continue reading How to stop people entering floodwater