Salts prove Mars once had water.
The rings tell us more about how and when this happened. Also the
story of the lost chopper and how they found it. Dr Karl with
first-hand accounts from Percy's driver.
Dr Karl’s a curious optimist – a great combination for a science lover. Join him and his guests for weird facts, amazing conversation and remember, it’s never too late for a happy childhood.
https://drkarl.com/