Need To Know with Dr Karl
The Australian pedestrian button
Dr Karl’s ode to the ergonomic and elegant design of the pedestrian button.
Events
On This Day: Aboriginal flag first flown
A potent symbol of Aboriginal Australia recognised the world-over, this flag first ruffled in the wind in Adelaide in 1971.
Need To Know with Dr Karl
The Fred Hollows Foundation’s Arclight
Dr Karl looks at how the Foundation’s portable and cheap ophthalmoscope is helping save lives and prevent avoidable blindness across the developing world.
Need To Know with Dr Karl
The invention that saved soldiers’ lives in WWI
Australian physicist William Lawrence Bragg located enemy artillery with a makeshift infrasound reader.
Need To Know with Dr Karl
The fate of our first submarine
Dr Karl tells the story of Australia’s first submarine in World War One, the AE2.
Need To Know with Dr Karl
Which way does water go down a drain?
Dr Karl investigates if water really drains anti-clockwise in the Northern Hemisphere and clockwise Down Under.
Need To Know with Dr Karl
Arthritic cane toads?
Did you know cane toads in Australia get arthritis and have weaker immune systems? Dr. Karl teaches us more about the toxic toads spreading across the nation.
On This Day
A history of Sydney’s Mardi Gras
This year is the 40th anniversary of Sydney’s annual Mardi Gras and follows on from the official legalisation of marriage equality in Australia.
On This Day
On this day: Happy 200th to Sydney’s Botanic Gardens
Two hundred years ago liquor was downed to celebrate the founding of one of Sydney’s icons – now home to almost 9000 plant species.
On This Day
On this day: The Batavia is fatefully wrecked
In 1629 a group of men murdered more than half the survivors of the Batavia wreck on deserted islands off WA, but 45 fought back and won.