The Glade 4.0

A lab at CERN might have figured out why the universe exists. Not in the "What is the meaning of life?" sense, but in the "The Big Bang should have created equal matter and antimatter which should have undergone mutual annihilation and left a universe full of photons and not much else...but didn't. So what gives?" sense.

The Large Hadron Collider may have discovered why we don't live in a universe of antimatter

So fractionally more antimatter disappears than normal matter. Over a long enough timescale, that would mean that antimatter becomes sparse to non-existent and we end up with a matter-based universe.

There's a lot of astronomical variables that if were very slightly changed in either direction it would be impossible for any life to exist.