How Do You Explain That?

We know that the moon influences the tides, but did you know that with the full moon, you always see the same side of the moon? Or that a yawn is contagious for humans and some animals? And what precisely causes birds not to bump into one another when they fly in a swarm and they swerve? These facts are part of a massive amount of knowledge about nature, physics and space that the RSG programme Hoe verklaar jy dit? has been sharing for 37 years. This book, translated from the original, bestselli