We're so, so lucky that life on Earth has survived for this long

Scientists have spent an incredible amount of manpower attempting to determine what conditions support life, and why Earth is so perfect for living things. Now, a researcher simulated 100,000 planets to try to determine how lucky we are that Earth has remained habitable for as long as it has. As it turns out, we're incredibly fortunate that Earth seems to have a habit of returning itself to habitability even after catastrophic events. This should go without saying, but just in case you haven't c...