The discovery of a drug able to slow cognitive decline in early-stage Alzheimer’s is being called a ‘historic moment’ in the treatment of the disease. The medication is the first later-stage trial "in a generation" to successfully do so.

Cameras aboard the International Space Station have captured video footage of Hurricane Ian as it moved into Florida and we find out about how dogs can smell stress.

Also in this episode:

• Findings in relation to asteroid impacts on the moon coincide with some on Earth - including the one that wiped out the dinosaurs
• Humans evolved from an armoured shark that swam the oceans 439million years ago, much earlier than first thought
• Genes behind condition that makes hair ‘uncombable’ in humans found
• Researchers develop a new technology to kill cockroaches
• Nostalgia alert… Toys R Us makes its UK comeback online

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