Halting the spread of breast cancer using a new molecular blocking process. Find out how the discovery stopped cancer metastasis in mice - and what’s next - with one of the scientists behind discovery at Israel’s Bar-Ilan University. Online Safety Bill: Inside social media’s ‘opaque’ algorithms. Plus, Royal Mail boss confirms cyberattack, and is still causing delays posting abroad.

Also in this episode:

- How cute Australian Echidnas blow snot bubbles to keep cool.

- FTX crypto collapse: Crypto exchange says $415m was hacked

- London team probes Pacific volcano blast felt ‘on other side of world’ - after magma discovery

- Food watchdog compares office cake to passive smoking risk

- Test flight success for world’s biggest plane

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