How to nuke an asteroid, and more…

After a massive, fresh asteroid impact crater was spotted on the moon, scientists jumped on the opportunity to study it to better understand the violent history of such impacts in our little nook of the solar system. If we ever find one on a collision course with Earth, scientists have simulated how we might be able to defend our planet from any potentially hazardous asteroids — with a nuclear bomb. 

Also today: 

• The Earth is moving in strange new ways in the North — and climate change is to blame
• Sperm whales blow bubbles in their sleep. Now we know why
• Slowing down wind turbine blades could help recover power in shifting winds
• Birdsong shares similar patterns to human speech

For more information about today’s episode, visit cbc.ca/quirks.