This is the biggest biological news since the discovery of DNA: NASA has actually really honest-and-for-true discovered a non-carbon based life form!
It's terrestrial, not alien, and was discovered in a lake in California. It's based not on Carbon, nor on everyone's favorite SF trope, Silicon, but rather it's based on - are you ready for this? - Arsenic!
I don't have too much else to say about it at this time, I'm still struggling to wrap my brain around it.