In the waning hours of the year’s biggest climate change conference – COP27 – we learned of a deal to create a loss and damage fund. This is essentially a source of finance to compensate poor countries for the pain they are incurring because of climate change. An often-cited example of such suffering is the ongoing drought in the Horn of Africa region, which has put some 22 million people at risk of severe hunger.

Imagine that a soldier has a tiny computer device injected into their bloodstream that can be guided with a magnet to specific regions of their brain. With training, the soldier could then control weapon systems thousands of miles away using their thoughts alone. Embedding a similar type of computer in a soldier’s brain could suppress their fear and anxiety, allowing them to carry out combat missions more efficiently.

A recently published study in a high-profile medical journal appeared to call into question the efficacy of colonoscopy, a proven and widely utilized strategy for the screening and prevention of colorectal cancer.

In the art world, there is a gaping gender imbalance when it comes to male and female artists.

In the National Gallery of Australia, only 25% of the Australian art collection is work by women.

On average, happiness declines as we approach middle age, bottoming out in our 40s but then picking back up as we head into retirement, according to a number of studies. This so-called U-shaped curve of happiness is reassuring but, unfortunately, probably not true.

Scientists know very little about the matter that makes up the galaxies in the Universe. About 20% of the matter in galaxies is visible or baryonic: subatomic particles like protons, neutrons and electrons. The other 80%, referred to as “dark matter”, remains mysterious and unseen.

In fact, it may not exist at all. “Dark matter” is just a hypothesis. Physicists and astronomers may be chasing a phantom – but that doesn’t stop us from looking. Why? Because if dark matter isn’t real, then the behaviour of the stars, planets and galaxies makes little sense.