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Here’s a modern human skull on the left, and Neanderthal skull on the right. Darren Curnoe

Curious Kids: Where did the first person come from?

Maeve, age 8, has a question that has stumped many scientists over the years. And that’s because it’s a surprisingly tricky question to answer. It depends a bit on what you mean by ‘person’.
There’s a margin of error in relying on fingerprinting to catch criminals. from www.shutterstock.com

Fingerprinting to solve crimes: not as robust as you think

Fingerprinting is a valuable police tool for tracking down suspects, but it’s not perfect. However, we can reduce the risk of any mistaken identity if we work within the limits of fingerprinting.
Indigenous Australians use ochre to add colour and detail to items such as this shield at the South Australian Museum. Image courtesy of South Australian Museum

When bacteria tell a story: tracing Indigenous Australian ochre sources via microbial ‘fingerprinting’

Ochre is more than just paint - it tells stories of culture and trade in Indigenous Australians. Using museum artefacts plus science can track ochre sources and untangle a lost history.
WPA2 has been cracked, so it’s time to update your router. Ksander/Shutterstock

Wi-Fi can be KRACK-ed. Here’s what to do next

KRACK can only be used in certain circumstances, and there are some steps you can take to keep your internet traffic safe.
Artist’s impression of the collision of two neutron stars, the source of the latest gravitational waves detected. National Science Foundation/LIGO/Sonoma State University/A. Simonnet

At last, we’ve found gravitational waves from a collapsing pair of neutron stars

Astronomers have finally confirmed the source of the latest detected gravitational waves was the collission of a pair of neutron stars, what they’d been searching for all along.
Racists take advantage of social media algorithms to find people with similar beliefs. from www.shutterstock.com

Here’s how Australia can act to target racist behaviour online

Racism thrives online because of a clash between the commercial goals and ethical responsibilities of social media companies. But Australia can take legal and civil actions right now to address this.
Chinese President Xi Jinping reviews troops on a car on Tiananmen Square during the military parade marking the 70th Anniversary of the Victory of Chinese People’s Resistance against Japanese Aggression and World Anti-Fascist War at Tiananmen Square in Beijing, China, 03 September 2015. EPA/WU HONG

Expect a shakeup of China’s military elite at the 19th Party Congress

The upcoming Chinese Communist Party’s 19th National Congress will see one of the biggest turnovers of China’s military elite since the founding of the country.