Yeast! How the heck does it work!We've delved into the Science Drops! archives for this one, but we feel it bears repeating...<hr> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.

Why do we have time zones?

Have you ever wondered why stars twinkle? Or why the Earth is round rather than, say, square or triangular? Or even why we have earwax?Science Drops! answers these - and many other thorny science questions - in a fun-filled 90 seconds! Hosted on Acast. See acast.com/privacy for more information.