University of Sydney

Even if one survives a heart attack, the formation of thick scar tissue can increase the chance of heart failure. Now researchers have found a way to improve the quality of scar tissue in animal models, resulting in improved heart function.

A new report declaring a climate emergency has been signed by thousands of scientists. But it remains hopeful, outlining six steps we can take to mitigate the worst effects of climate change – provided we act sooner rather than later.

Australian researchers have discovered a fungus in Tasmania that produces novel molecules with similar activity to opioids. These never-before-seen molecules may have similar analgesic properties to morphine but without its dangerous side effects.

Tuberculosis is a difficult disease to treat, and help may now be coming from an unexpected source – a sea sponge.

Nowadays, the Milky Way is a pretty quiet galaxy – but just a few million years ago its central black hole sent off huge flares of radiation.

By studying the way pain works in injured fruit flies, scientists have for the first time uncovered evidence that its effects can be long-lasting, something they say opens up new opportunities for more effective treatments for chronic pain in humans.

​The box jellyfish is the world's most venomous creature, with a sting from its trailing tentacles causing intense pain, necrosis of the skin, and in some cases death by cardiac arrest. Now, however, scientists have found an antidote for such stings – and it's an existing cholesterol-lowering drug.

Normally, animals reproduce by either laying eggs or giving birth to live young, but an Australian species of lizard can apparently do both in the same pregnancy. Scientists witnessed a three-toed skink lay three eggs before giving birth to a live baby, which has never been observed before.

Combustion experts from the University of Sydney are working on a revolutionary new rocket engine that can not only breath air while in the atmosphere, but can burn incoming air at supersonic speeds, promising to make space launches cheaper and more efficient.

Some studies suggest the world is entering a sixth major extinction event. But now, in a rare piece of good news from that field, researchers from Australia, Canada and the US have rediscovered Wallace’s giant bee, an insect that hasn’t been seen in almost 40 years.

The world’s first gene-edited human babies have been born in China. Professor Jiankui He claims that by removing a specific gene from the embryos using CRISPR-Cas9, the twin girls would have a natural immunity to HIV. But scientists question the safety, effectiveness and morality of the procedure.

Gamma-ray bursts (GRBs) are the most energetic events in the universe, second only to the Big Bang itself. We don’t usually get any warning, but now astronomers have spotted the telltale signs of a star system that could blow its lid any moment – and it’s far too close to Earth for comfort.