We are already in WW3... Americans and everyone that isn't a weird looking arabian freak with a funny accent vs. weird looking arabian freaks with funny accents.
And there might be alien bacteria in Europa, because as far as we know that thing is full of water, so bacteria could live in it, and bacteria is life, right? So yeah, thats my two cents. Our goal on life is to get to heaven, so we aren't supposed to be looking for other life, just taking care of our own.
And for the record, "Global Warming" used to be a money making machine hoax, but now that Arky farted, its melting the ice caps or whatever it is that those idiots say...