Prime Minister’s teaching prizes, platypuses with high PFAS and house bricks from sugar cane waste
The Science Show
Deep Dive
Why are platypuses in New South Wales carrying high levels of PFAS chemicals?
Platypuses in New South Wales are carrying high levels of PFAS chemicals, which are often referred to as forever chemicals, through their diet and sediment from the rivers. PFAS is hydrophobic and tends to stick to sediment, which platypuses ingest while foraging for macroinvertebrates. This indicates widespread contamination, even in areas not previously known as PFAS hotspots.
Why are PFAS levels in platypuses a cause for concern?
PFAS levels in platypuses are concerning because PFAS is a synthetic, toxic chemical that persists in the environment for hundreds of years. High levels found in platypuses, such as 1,200 micrograms per kilogram in some liver samples, are nearly 390 times the recommended safe limit. This suggests potential long-term health impacts on platypuses and other wildlife.
What is Sugarcrete and why is it considered sustainable?
Sugarcrete is a building material made from sugarcane waste mixed with binders like sodium silicate or lime and water. It is considered sustainable because it has one-sixth the CO2 emissions of a regular brick, is cheaper, and can be locally sourced. Sugarcrete can be customized for strength, making it suitable for both insulation boards and load-bearing bricks.
Why did the Aboriginal students at the National Youth Science Forum critique the use of gimmicks in science education?
The Aboriginal students at the National Youth Science Forum critiqued the use of gimmicks in science education because such approaches often lead to tokenistic learning experiences. They emphasized the need for practical, academic-focused education that provides students with the necessary skills and knowledge to succeed in the Western world, while also integrating cultural elements.
Why is it important to monitor PFAS in the Warragamba drinking water catchment?
Monitoring PFAS in the Warragamba drinking water catchment is crucial because it supplies 80 to 90 percent of Sydney's water. High PFAS levels in the catchment could pose significant health risks to the human population and cast a long shadow over the environment, affecting wildlife and water quality.
What is the Green Power Electric Vehicle Challenge and how does it relate to STEM education?
The Green Power Electric Vehicle Challenge is an initiative by Daniel Edwards, a primary school teacher in Burnie, Tasmania, that engages students in STEM education through hands-on projects. It encourages students to design and build electric vehicles, fostering a deeper understanding of science, technology, engineering, and mathematics while connecting their learning to real-world applications.
Why have quolls been less prominent in conservation news compared to Tasmanian devils?
Quolls have been less prominent in conservation news because the attention has been largely focused on the Tasmanian devil and its struggle with devil facial tumour disease, a transmissible cancer that has decimated their population. This has led to quolls quietly declining in certain areas without much media coverage.
What is the significance of integrating Indigenous knowledge into modern science and medicine?
Integrating Indigenous knowledge into modern science and medicine is significant because it addresses the holistic approach to health, considering social and emotional well-being alongside physical symptoms. This can lead to more inclusive and effective healthcare practices, especially for Indigenous communities. It also helps in creating a bridge between traditional and Western knowledge systems, fostering a more comprehensive understanding of health and the environment.
Why did the Science Olympiad participants receive such positive results?
Science Olympiad participants received positive results due to their exceptional preparation and dedication. They attended a summer school by Australian Science Innovations where they were taught advanced first-year biology concepts and trained in lab skills, giving them a strong foundation and confidence to excel in the competition.
What inspired the participants to continue in science-related fields?
The participants were inspired by their experiences in the Science Olympiad and the recognition they received. One student plans to study astrophysics, while another aims to study medicine and conduct research. The Olympiad provided them with a glimpse of the future in science and the opportunity to see the impact of their work.
- Australian Science Olympiad students won medals in various categories.
- Students received training from the Australian Science Innovations (ASI).
- Students' future plans include studying astrophysics and medicine.
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