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How were the pyramids built?

What causes Alzheimer's disease?
24 May 2024
Presented by Chris Smith with Relebogile Mabotja, TalkRadio 702. 

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Pyramids of Giza
Credit: 
CC0, via Unsplash
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This time on Ask!, Dr Chris explains how tree rings helped scientists confirm last summer was the hottest for 2000 years. Also, how were the pyramids built? And where are we with understanding and treating Alzheimer's disease?

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