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Friend or foe? Just look at the way a person moves

We make judgements of people by the way they move, even when we can't see their facial features. Flickr/Giuseppe Milo, CC BY

Ever had that funny feeling about someone you don’t know who’s approaching you?

Originally published in The Conversation.

Curious Kids: Why do we count to 10?

Nature gave us ten fingers, so it makes sense to count to ten.

Originally published in The Conversation.

National poll vs sample survey: how to know what we really think on marriage equality

The plan to use the Australian Bureau of Statistics to conduct the federal government’s postal plebiscite on marriage reform raises an interesting question: wouldn’t it be easier, and just as accurate, to ask the ABS to poll a representative sample of the Australian population rather than everyone?

Originally published in The Conversation.

Tech companies can distinguish between free speech and hate speech if they want to

Freedom or Hate Speech? wk1003mike/shutterstock

In the wake of violence in the US town of Charlottesvil

Originally published in The Conversation.

How we inherit masculine and feminine behaviours: a new idea about environment and genes

Could millennia of gendered environments prevent the development of genetic mechanisms for gender differences? wavebreakmedia/Shutterstock

The now infamous The Conversation.

From the edge of the Solar System, Voyager probes are still talking to Australia after 40 years

Both Voyager spacecraft are only in communication with Earth via a Canberra tracking station. NASA/JPL

This month marks 40 years since NASA launched the two Voyager space probes on their mission to explore the outer planets of our Solar System, and Australia has been helping the US space agency keep track of the probes at every step of their epic journey.

Originally published in The Conversation.

For sniffing out crime and missing persons, science backs blood-detection dogs

Dogs can reliably sniff out human blood, even after two years of environmental degradation. Jason Korbol/shutterstock

It’s difficult to contemplate the tragedy of losing a loved one and never knowing what happened to them.

Originally published in The Conversation.

Father and son: Saturn and Jupiter in the northern sky

Father and son, together the magnificent gas giants contain 90% of the mass of all objects orbiting the Sun. The Conversation.

We all need to forget, even robots

If you tell a robot secrets, you might want to make sure it can forget them too. The Conversation.