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Instagram's privacy updates for kids are positive. But plans for an under-13s app means profits still take precedence


Facebook recently announced significant changes to Instagram for users aged under 16.

Originally published in The Conversation.

Muscles are important, but stiff tendons are the secret ingredient for high-speed performance

The fastest sprinter is the world right now is Lamont Marcell Jacobs, who won Olympic gold in the men’s 100-metre sprint with a time of 9.80 seconds. You might be surprised to learn that most of the explosive power displayed by Jacobs and other elite athletes doesn’t come from their muscles, or even from their minds – it comes from somewhere else.

Originally published in The Conversation.

What Olympic athletes can teach us about regulating our emotions and staying dedicated

Alessandra Tarantino/AP

Olympians are often seen as the epitome of human performance, with incredible physical and mental strength.

Originally published in The Conversation.

We must include more women in physics — it would help the whole of humanity

Prajval Shastri, Author provided

All around the world, there is an extreme gender imbalance in physics, in both academia and industry.

Originally published in The Conversation.

Is the truth out there? How the Harvard-based Galileo Project will search the skies for alien technology


Can we find alien technology? That is the ambitious goal of the Galileo Project, launched this week by Harvard astrophysicist Avi Loeb with substantial private financial backing.

Originally published in The Conversation.

Vaccine selfies may seem trivial, but they show people doing their civic duty — and probably encourage others too


Have you been vaccinated yet? And if you have, are you one of a growing number of people who posted a selfie on social media afterwards?

Originally published in The Conversation.

What Olympic gymnasts can teach us about improving our balance

The acrobatic handsprings, somersaults and twists performed by world-class gymnasts at the Tokyo Olympics are among the most complex skills humans can perform.

But at their heart is an instinctive process that can help teach us mere mortals how to stay safe from falls as we move much less spectacularly around our own environment.

To complete acrobatic manoeuvres, gymnasts need energy. In most cases, this energy comes from the jump performed at the start of the element, often after a run-up to gain momentum.

Originally published in The Conversation.

Public protest or selfish ratbaggery? Why free speech doesn't give you the right to endanger other people's health

Thousands of demonstrators took to the streets in major Australian cities at the weekend, to protest the rolling lockdowns that have formed a central part of the government response to the COVID pandemic.

Originally published in The Conversation.

Ancient brains: a look inside the extraordinary preservation of a 310-million-year-old nervous system

Javier Ortega-Hernández, Author provided

Charles Darwin famously discussed the “imperfections” of the geological record in his book On The Origin of Species.

Originally published in The Conversation.

How the Groundhog Day grind of lockdown scrambles your memory and sense of time


With roughly half of Australia in lockdown at the moment, a common experience is a warped sense of time and poor memory. What day is it? What week is it? Did I go to the supermarket yesterday, or was it the day before?

Originally published in The Conversation.