Why do humans have cannabis receptors?

03 July 2019
Presented by Chris Smith with Eusebius McKaiser, Talk Radio 702.


Why do flies exist? Could sound propel a spaceship? Why do humans have receptors for tetrahydrocannabinol in their brains? How do cars calculate their fuel consumption? And is all life descended from bacteria? Plus, we report on the recent discovery of a plume of methane on Mars: what does this mean for the likelihood of finding life on the red planet?


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