I believe in global warming, and I'm pretty sure it's caused in part by human activities, especially by burning hydrocarbons and cutting down a lot of forests.
I don't think any of NASA'sa information is "deceitful" in that I don't think they're deliberately hiding stuff from us.
Certainly NASA has devolved from the shining star of American government in the sixties to a bloated and inept bureaucracy today, but that's what
happens when anything in the government goes on for a long time.
I certainly don't think they're hiding any sort of Secret Plot; their very ineptness would obviate against such a thing, anyway!