Will quoted President Donald Trump as saying that he does not care “much about anything” other than “peace” when it comes to Ukraine. But peace is not always the highest value in a given conflict.

Narrator: 4 and a half billion years ago, clouds of cosmic dust and gas which were orbiting the Sun collided into one another, creating the Earth, our planet, the home of mankind. It spins at 1000 ...

Stay up-to-date with the latest and best audio content from CBC Listen delivered to your inbox every two weeks.