Exploding gas pipelines have signalled a new environmental disaster. Nord Stream 1 and 2 have both sprung leaks, with many assuming sabotage. With huge amounts of methane released into the atmosphere, the team examines the climate impact of the damage - and puts the leak into context.

During the height of the covid-19 pandemic, male birth rates dipped, temporarily altering the normal gender ratio of babies. The team finds out why and how this happened.

Feeling itchy? Researchers have been looking at mice to figure out why itching is contagious - and the mere mention of the word has our panel scratching like mad!

The molar teeth of primates, including humans, can clue us into how quickly their fetuses grow during pregnancy. The team finds out about a new mathematical model which is helping us to better understand the evolution of our species.

Ahead of New Scientist Live this weekend (8th - 9th October), Rowan chats with star speaker Nick Lane of University College London. Nick explains how much of the chemistry of life seems to happen spontaneously - and how this understanding allows us to unpack the deepest mysteries of biology, from how life got going to what makes us conscious.

On the pod are Rowan Hooper, Penny Sarchet, Alexandra Thompson, Carissa Wong and Matt Sparkes. To read about these stories and much more, subscribe at newscientist.com/podcasts.

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