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The teeth in these Australopithecus africanus skulls contain important evidence about the nutrition of these individuals as they grew up. Luca Fiorenza

Teeth ‘time capsule’ reveals that 2 million years ago, early humans breastfed for up to 6 years

A new study shows the enigmatic hominin species Australopithecus africanus may have breastfed young for around 5-6 years – a very costly practice for the mother.
People do live outside Earth – on the International Space Station! But humans have had to find a way to make the conditions there more like what we’re used to at home. Flickr/NASA's Marshall Space Flight Center

Curious Kids: can people live in space?

The short answer is yes, but it’s really, really difficult.
When protesters took to the streets in Hong Kong, China’s state media had several tactics for how to describe it: some outlets ignored it, while others railed against ‘extremists’. Jerome Favre/AAP

Extremist mobs? How China’s propaganda machine tried to control the message in the Hong Kong protests

Pro-Beijing media used different messages to target specific audiences inside and outside China during the Hong Kong protests, but each had the same goal – putting the right spin on the news.
Was velociraptor a feathered friend? Here’s one artist’s impression. Shutterstock

Curious Kids: did the velociraptors have feathers?

When the first Jurassic Park film came out, we didn’t know which dinosaurs had feathers. But a few years later, a very important discovery was made that changed our thinking on how dinosaurs looked.
The sense of touch is generally measured by a sensor that can translate a pressure upon it into a small electrical signal. Shutterstock

It’s not easy to give a robot a sense of touch

Our sense of touch lets us know how hard or soft something is, how solid or pliable it is to handle. That’s an important skill if you want robots to handle things safely.
Apple’s industrial design has played a fundamental role in transforming computers from machines for tinkerers into desirable objects of self-actualisation. Shutterstock

Design and repair must work together to undo our legacy of waste

With the benefit of hindsight, we might finally see that the iPhone was the opposite of minimalism.
Children’s engagement with digital devices is often driven by their desire for creative expression, entertainment and social interaction. Shutterstock

Most adults have never heard of TikTok. That’s by design

In order to reach younger audiences, social media apps must get past the gatekeepers of preteen online engagement: the parents.
Material from the Earth’s core has been leaking into the mantle through activity that led to volcanic eruptions such as that helped form the Hawaiian islands. EPA/Bruce Omori/Paradise Helicopters

Earth’s core has been leaking for billions of years

New findings suggest the core has been leaking for the past 2.5 billion years, and that could help scientists understand how the core was formed.
Cyclones Trevor and Veronica hit north Australia in 2019. NASA Earth Observatory handout/EPA/AAP

I’ve always wondered: how do cyclones get their names?

In 1887 Queensland’s chief weatherman Clement Wragge began naming tropical cyclones, using names from the Greek alphabet, fabulous beasts and politicians who annoyed him.
Research underway at the University of Technology, Sydney’s AFTER facility is yielding some surprising new findings about how bodies decompose in the Australian bush. Supplied by UTS

‘This is going to affect how we determine time since death’: how studying body donors in the bush is changing forensic science

‘This is going to affect how we determine time since death’: how studying body donors in the bush is changing forensic science The Conversation, CC BY77.2 MB (download)
On the outskirts of Sydney, in a secret bushland location, lies what's officially known as the Australian Facility for Taphonomic Experimental Research. In books or movies, it'd be called a body farm.
Polygenic risk scores currently account for only a small proportion of your total genetic risk. Shutterstock

Genetic risk tests are now widely available, but they aren’t always useful – and could even be harmful

Most common chronic diseases are the outcome of complex interactions between genetic, environmental and social risk factors, so a genetic risk score, on its own, isn’t much help.
Experiments performed in microgravity – like this one in the International Space Station by astronaut Samantha Cristoforetti – can give us data not able to be gathered on Earth. NASA

To carve out a niche in space industries, Australia should focus on microgravity research rockets

On Earth the flame from a struck match looks like an inverted teardrop shape and is orange. In microgravity, that same flame is spherical and blue. Heat transfer is different with minimal gravity.