What are some of the silliest notions posted as facts in Alternative Science?

That Mick's real name is not Mick ;) 

6x

Claims that negative energy exists.

Claims that light aircraft and jet airliners are equally vulnerable to accidents and pilot error.

Claims that those who do not believe computers are of extraterrestrial origin are foreign liberals.

Outside YA, this news report, about a man who pretended to be the ghost of his ex's mother, is perhaps weirder than anything I've seen here: https://www.bbc.co.uk/news/uk-england-45264081

Here's a few recent gems, from memory:

Moons with retrograde orbits are paranormal.

Bees once flew using paranormal powers.

Shadow people which can't be seen can be seen in other dimensions which can't be seen.

You can calculate the size, altitude, direction, and velocity of moving objects in the sky by using random stars as reference points.

Blind cave fish identify each other by color.

Numerous police depts have psychics on their payrolls.

Ghosts are composed of "energy".

If you put a crystal in the moonlight it will recharge it with positive vibrations that will make you feel better.

Animals can see ghosts.

Any conspiracy theory.