New in Science Podcast

Researchers from Curtin University bolted an air sampler to a car and drove more than 1,100 kilometres across Western Australia, from Cottesloe to Cocklebiddy, sampling the air roughly every 26 kilometres. From those samples they identified 633 different types of plants and animals, and the mix changed with the landscape — habitat and environmental conditions mattered more than distance alone. Alex and Jordan unpack how airborne environmental DNA works, why a detection does not prove a species lives exactly where it was sampled, and the practical side: the same drive detected 12 regulated pest species, including native budworm, stable fly and Australian sheep blowfly. Guest Dr Joshua Newton, lead author of the study, explains in his own words what the team was trying to find out and what airborne DNA can — and cannot — tell us.

Sources:

Curtin University, "The road to discovery: DNA in the air maps WA biodiversity", Oct 20, 2026 — https://www.curtin.edu.au/news/media-release/the-road-to-discovery-dna-in-the-air-maps-wa-biodiversity/

Newton et al., "Car-mounted airborne eDNA sampling detects landscape scale biodiversity turnover along environmental gradients", Molecular Ecology Resources, 2026 — https://doi.org/10.1111/1755-0998.70217

Phys.org, "The road to discovery: DNA in the air maps biodiversity", Oct 20, 2026 — https://phys.org/news/2026-10-road-discovery-dna-air-biodiversity.html

On Venus, one full turn takes longer than a whole year. Venus spins so slowly it takes about 243 Earth days just to turn around once — but only about 225 Earth days to go all the way around the Sun. So by the time Venus has finished one spin, it has already finished a whole year.

Priya also explains the twist: Venus spins backwards, so the Sun would rise in the west and set in the east — and sunrise to sunrise is a different number, about 117 Earth days. Scientists think Venus's thick atmosphere and the Sun's pull helped slow its spin over billions of years, but the full story is still being worked out.

Sources:

NASA Science, Venus: Facts — https://science.nasa.gov/venus/venus-facts/

Enceladus, a small icy moon of Saturn, hides a global ocean under kilometres of ice — and its south-polar tiger stripes spray that ocean into space as a plume. In this episode, Alex and Jordan unpack a lab study that shows how a salt mineral called natron can trap tiny pockets of fluid as it freezes, making natron a key target for reading that ocean without drilling through the ice. They explain why larger, fresh grains near the vents are the best samples, and the honest caveats: this is a mechanism, not a detection of life, natron has not yet been confirmed on Enceladus's surface, and the lab solution was about five times more concentrated than Cassini-based estimates.

Sources:

Perera et al., Fluid inclusions establish natron as a key astrobiological target on Enceladus, Communications Earth & Environment, 2026 — https://doi.org/10.1038/s43247-026-04080-z

Phys.org, Salt crystals could hold clues to life beneath Enceladus's ice, Oct 17, 2026 — https://phys.org/news/2026-10-salt-crystals-clues-life-beneath.html

For years, the Denisovans were almost a ghost story in genetics — a whole branch of the human family known only from DNA, with no face to put to the name. That has changed. In this episode, Alex and Jordan unpack a new study that uses tough ancient proteins from 130,000-year-old bones at Xujiayao in northern China to finally give the Denisovans a recognizable face: low, broad skulls, thick bone, heavy brow ridges, flat cheeks, and rectangular eye sockets. They explain how protein analysis worked where DNA could not, why this is a composite family resemblance rather than a portrait of one individual, and what it means for how widely Denisovans spread across East Asia — and what we still cannot claim yet.

Sources:

Xing et al., The proteome of Middle Pleistocene Xujiayao and common Denisovan morphology, Nature, Oct 21, 2026 — https://doi.org/10.1038/s41586-026-11132-z

Nature News, This is what the mysterious Denisovans looked like, Oct 21, 2026 — https://www.nature.com/articles/d41586-026-03360-0

Pilot Episode — Physicists at Northwestern University have trapped a single positron — the antimatter twin of the electron — and held it in a controlled quantum state for months. The team, led by Gerald Gabrielse, suspended the particle with electric and magnetic fields in a Penning trap, cooled to about 300 millikelvin, and turned it into a one-positron quantum cyclotron: an artificial atom whose individual quantum jumps can be driven and watched with carefully tuned microwaves. Loading even one positron takes roughly eight to eleven hours — the particles start as fast-moving products of sodium-22 decay and are slowed through a tungsten crystal, keeping only the slowest survivors. The point of all this patience is a measurement: Gabrielse previously measured the electron's magnetic moment to about one part in ten trillion, and the Standard Model says the positron should be its near-perfect mirror image. A comparable positron measurement is the sharpest test yet of that symmetry — and of why the universe is made of matter at all. Published in Physical Review Letters, October 21, 2026. One honest caveat, stated in the episode: the comparison itself has not been reported yet. This is the trap, the cooling, and the control that make it possible.

Sources:

Myers et al., One-Positron Quantum Cyclotron, Physical Review Letters, Oct 21, 2026 — https://doi.org/10.1103/gbkc-6nlj

Phys.org, One-positron cyclotron could test a key prediction of the Standard Model — https://phys.org/news/2026-10-positron-cyclotron-key-standard.html