Our planet’s oxygen levels will drop, and there’s no way to stop it

It’s no secret that Earth is doomed. Sure, there’s the threat of climate change and the fact that sea levels are rising around the world. But that’s not what we're talking about. Instead, our planet’s impending doom is actually set to happen billions of years from now, long after we’re all gone, when the oxygen levels drop and life as we know it ceases to exist.

When this change occurs, it’s going to happen pretty rapidly, a study published a few years ago claims. It will be similar to...