Good news and bad news. The good news is that one day in the future, we'll finally fulfill a science fiction dream and be able to create colonies where we can live on other planets.

The bad news? When we're repopulating those colonies... um, men won't really be necessary.

A new study found that when frozen sperm samples were exposed to microgravity situations, they held up and survived perfectly.

So when it's time to colonize Mars or wherever, instead of sending up co-ed crews to do the whole Adam and Eve thing, it could just be all-female crews traveling with a frozen sperm bank instead.

And that might be smart, because a NASA study once found that space crews where everyone's the same gender do better on missions and have more cohesive teams.

Read more at The Guardian.