The process of stomata, the microscopic openings on plants that allow them to breathe, is demonstrated.
The CSIRO's Dr Robert Evans demonstrates a Silviscan machine and explains its use.
This episode looks at speedy science with a focus on fast vehicles such as jet boats, go-karts, rockets, V8 utes and hydrofoil jet skis. Plus, find out just how fast the Earth is moving through the universe, meet the Aussie who holds the fastest land speed record and learn all about thermodynamics.
In this series, Hugh Fearnley-Whittingstall and Anita Rani explore where this gigantic problem is coming from, and what we can all do to try and solve it.
Hugh realises that hundreds of thousands of tonnes of plastic is exported from the UK to Malaysian every year. With the help of Greenpeace and a local environmental action group, he visits some illegal plastic processing plants and is shocked by what he finds. Mountains of plastic bags and packaging that are clearly from the UK and Europe contaminate the environment and waterways of Malaysia. Consumers are under the impression their local council is recycling their waste but it appears that this