Without the help of icebreaking ships, all-terrain vehicles and tough machinery, most Antarctic science could not happen. The French ship L’Astrolabe is a crucial facility for scientists exploring the Earth’s climate, oceans, atmosphere and ecology.
Every year, the ship and its crew, managed by the French Navy for the Institut polaire français Paul-Émile Victor (IPEV) from Hobart, support approximately 50 French and international scientific projects based out of the French stations Dumont d’Urville and Concordia. L’Astrolabe also transports food, supplies, logistics officers and scientists to and from the Australian Antarctic Division’s base on Macquarie Island.
Plants need water, but if that water also comes with a hefty dose of salt it can kill the plant. But the ice plant, Mesembryanthemum crystallinum, has a clever way of storing salt in special cells, allowing it to thrive in saline coastal areas.
Imagine printing your own room lighting, lasers, or solar cells from inks you buy at the local newsagent. Jacek Jasieniak and colleagues at CSIRO, the University of Melbourne and the University of Padua in Italy, have developed liquid inks based on quantum dots that can be used to print such devices and in the first demonstration of their technology have produced tiny lasers. Quantum dots are made of semiconductor material grown as nanometre-sized crystals, around a millionth of a millimetre in diameter. The laser colour they produce can be selectively tuned by varying their size.
High tech cling wraps that ‘sieve out’ carbon dioxide from waste gases can help save the world, says Melbourne University chemical engineer, Colin Scholes who developed the technology. The membranes can be fitted to existing chimneys where they capture CO2 for removal and storage. Not only are the new membranes efficient, they are also relatively cheap to produce. They are already being tested on brown coal power stations in Victoria’s La Trobe Valley, Colin says. “We are hoping these membranes will cut emissions from power stations by up to 90 per cent.”
Researchers at Geoscience Australia have unravelled the development of a unique seafloor community thriving in complete darkness below the giant ice sheets of Antarctica.The community beneath the Amery Ice Shelf in Antarctica is 100 kilometres from open water and hidden from view by ice half a kilometre thick. This ecosystem has developed very slowly over the past 9,000 years, since the end of the last glaciation.
Today it is home to animals such as sponges and bryozoans fed by plankton carried in on the current. Dr Alix Post studied shell fossils within core samples where she unexpectedly found evidence of these isolated ecosystems.
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