Why do men have nipples?

How do noise-cancelling headphones work? Can genes make you immune to HIV?

22 March 2019

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

STATUE-TORSO

Credit:

CC0, via Pexels

Why is the sun's halo hotter than its surface? Why do ice cubes crack when you add water? Why do men have nipples? How do noise-cancelling headphones work? Can you implant genes to become immune to HIV? Can batteries prevent power cuts in South Africa? Plus we say Hello Tomorrow! Chris explains the latest and greatest technology showcased at a recent conference in Paris.