Bill Nye on UFO Cover-Up: Denies

The claim: Non-human intelligence has visited Earth and governments are hiding it.

2016-07-01: “No I don’t believe the aliens exist coming to visit you and the government knows about it and hasn’t told you. No.” source
2016-08-26: “So it’s a complete myth that the government knows. Just think how hard it is for the government to keep anything secret. With all due the government kind of sucks at keeping secrets. So they couldn’t possibly keep the secret with 10,000 people in on it.” source
2017-11-08: “Debunking such things take time. I encourage your believer friends to appreciate how much humans can accomplish. For me, these shows encourage people to presume that our ancestors weren't very good at figuring things out.” source
2019-06-02: “it's probably one part of the military not telling the other part of the military what they're up to, for a good reason.” source