Talking Science

More missions have been sent to Mars than to any other planet, and roughly half have failed. We look at why Mars holds such a grip on us: the evidence that it was once warm and wet, the search for signs it may have hosted life, and the genuinely brutal obstacles standing between us and a human landing.

You'll come away understanding what happened to the Martian atmosphere, what the rovers have actually found, and why radiation, not distance, may be the hardest problem to solve.

Talking Science is sponsored by Kinsoft. Visit www.kinsoft.com.au

Further reading: NASA Mars exploration program; ESA Mars Express mission pages; Perseverance and Curiosity mission science summaries.

Your brain is about 1.4 kilograms of tissue with roughly 86 billion neurons, and it is the least understood organ in the body. We cover how neurons actually communicate, what the major regions do, why the left brain versus right brain idea is a myth, and why consciousness remains genuinely unexplained.

You'll come away understanding what neuroplasticity really means, why brain scans are more ambiguous than headlines suggest, and which popular brain facts are simply false.

Talking Science is sponsored by Kinsoft. Visit www.kinsoft.com.au

Further reading: Queensland Brain Institute explainers; Nature Reviews Neuroscience; Society for Neuroscience public resources.

Time runs at different speeds depending on how fast you are moving and how strong the gravity around you is. That is not a thought experiment, it is measured daily, and your phone's navigation would fail within minutes if we ignored it. We work through special and general relativity in plain language, without the mathematics.

You'll come away understanding why nothing can exceed the speed of light, what the twin paradox really shows, and why gravity may not be a force at all.

Talking Science is sponsored by Kinsoft. Visit www.kinsoft.com.au

Further reading: Einstein Online (Max Planck Institute); NASA relativity resources; Royal Institution lectures on spacetime.

For the first time in history we can edit the genetic code of a living organism cheaply, quickly and precisely. CRISPR began as a bacterial immune system and became the most consequential biotechnology of the century. We explain how the molecular scissors actually work, what has already been cured with them, and where the ethical line is being drawn.

You'll come away understanding the difference between editing a patient's cells and editing an embryo, and why that distinction is the whole argument.

Talking Science is sponsored by Kinsoft. Visit www.kinsoft.com.au

Further reading: Broad Institute CRISPR explainers; Nature news coverage of gene editing; WHO human genome editing governance framework.

Stars are not eternal. They form from collapsing clouds of gas, burn for millions or billions of years, and then die, some quietly and some in explosions bright enough to briefly outshine an entire galaxy. We follow a star's full life cycle and explain why the calcium in your bones and the iron in your blood were forged inside one.

You'll come away understanding what nuclear fusion actually does, why a star's mass determines its entire destiny, and what will eventually happen to our own Sun.

Talking Science is sponsored by Kinsoft. Visit www.kinsoft.com.au

Further reading: NASA astrophysics resources; ESA/Hubble star lifecycle material; Australian Astronomical Observatory education pages.

Black holes are the most extreme objects in the universe — regions where gravity has won so completely that not even light can escape. We unpack what a black hole actually is, how one forms when a massive star dies, and what would really happen if you fell into one. Along the way we dismantle the biggest myth about them: they are not cosmic vacuum cleaners hoovering up the galaxy.

You'll come away understanding what an event horizon is, why time behaves so strangely near one, and why the supermassive black hole at the centre of our own galaxy is surprisingly quiet.

Talking Science is sponsored by Kinsoft. Visit www.kinsoft.com.au

Further reading: NASA black hole overview; Event Horizon Telescope collaboration; ESA science pages.