Why does time only move forward?

Why can't we go backwards in time? And why can't different species reproduce?

29 July 2022

Presented by Chris Smith with Lester Kiewit, 567 CapeTalk.

POCKET-WATCH

Credit:

CC0, via Pixabay

How do we know that white light contains every colour? Why does time only move forward? Why aren't birds electrocuted by power lines? How do aeroplanes manage to stay airbourne? Why can't different species reproduce? How do X-Rays work? Why do antibiotics work against bacteria, but not viruses? Lester Kiewit and Dr Chris have the answers...