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Jacinda Ardern and Immanuel Macron will head up the Christchurch Call meeting, aimed at coordinating international regulation of harmful online content. Ian Langsdon / AAP

It’s vital we clamp down on online terrorism. But is Ardern’s ‘Christchurch Call’ the answer?

Being seen to lead is clearly an important political aspect of managing online content. But internet regulation must focus on creating policy that is clear, accountable, balanced and open to appeals.
The more fuel there is for the fire to burn, the bigger the fire. Leaves, trees and grass fuel the fire. Flickr/bertknot

Curious Kids: how do bushfires start?

Bushfires require three key ingredients to ignite: heat, fuel and oxygen.
Not everyone trusts that science will bring benefits to society. from www.shutterstock.com

Scientists want to build trust in science and technology. The alternative is too risky to contemplate

In Australia, the next government will need to meet the challenge of refreshing the social licence between science, government and the many and diverse communities that make up our nation.
Facebook’s Mia Garlick says, ‘we’re frequently seeing politicians use the Facebook Live tool to augment a press conference or to directly speak to voters about the issues of importance of the day.’ AAP/MICK TSIKAS

Media Files: Facebook’s Mia Garlick on #Ausvotes2019 and how Australian MPs use social media

Facebook’s Mia Garlick on how Australian politicians are using social media The Conversation44.8 MB (download)
Today's Media Files podcast examines the role of social media in election campaigns, including the spread of 'fake news' and foreign political interference.
Photographed on Kangaroo Island, this rock – called a ‘zebra schist’ – deformed from flat-lying marine sediments through being stressed by a continental collision over 500 million years ago. Dietmar Muller

How Earth’s continents became twisted and contorted over millions of years

Giant forces slowly move continents across a viscous layer of the Earth, like biscuits gliding over a warm toffee ocean. This stresses the continents, and twists and contorts the crust.
Prime Minister Scott Morrison, with his wife Jenny Morrison, used a campaign rally at the Breakers Country Club in Wambarel to speak about online safety on May 5 2019. Mick Tsikas /AAP

Coalition plans to improve online safety don’t address the root cause of harms: the big tech business model

It’s easy to legislate for new offences and more incarceration. It’s harder – and more expensive – to ensure the community is safer in the long term. This involves addressing causes, not effects.
Russian President Vladimir Putin visits a facility to celebrate the anniversary of the 1961 first manned space mission. Space capabilities have changed a bit since then. Alexey Nikolosky / AAP

A guide to ensure everyone plays by the same military rules in space: the Woomera Manual

India, China, the United States and Russia can now precisely target objects in space. But we currently lack appropriate rules and regulations to deal with space weapons.
Searching for planets around nearby stars is like searching for a needle in a field of haystacks. Trevor Dobson/Flikr

How we found a white dwarf – a stellar corpse – by accident

Science is full of surprises. While searching for planets orbiting nearby stars, researchers stumbled across the remains of a star that once outshone the Sun.