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!<br /><hr><p style='color:grey; font-size:0.75em;'> 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.</p>