大象传媒

Dr Chris Smith and the Naked Scientists weigh up the science behind Boris Johnson's anti-obesity drive and go swimming with the physics of sperm.

Plus, a look at the fascinating life of pioneering chemist, Rosalind Franklin and why your cuppa can help explain leaves on the line isn't a such a flimsy excuse after all.

Get more in the podcast from the 大象传媒 Sounds app.