A lion’s roar is one of the most powerful sounds in the animal kingdom, but how would it change in the vacuum of space? With no air to carry sound waves, a lion on the Moon wouldn’t be able to ...

Well, there are a few problems there, too. Take that iconic lion roar. Sounds majestic, right? Just like the famous MGM roar. Here's the issue: A lion's roar doesn't sound like that. This is a roar.

The lion has the loudest roar of all the big cats ... helped by swivelling ears that adjust to the direction that sound is coming from. Their sensitive hearing means they are able to stalk ...