Why do Buddhists cremate instead of burying? A Buddhist, when dead, is most of the time cremated and not buried. Does this have to do with anything in the teachings of the Buddha? As far as I know, burying a body is more Eco-friendly than cremation. I share with you one of the best answers given by the legendary Neil deGrasse Tyson :) https://www.youtube.com/watch?v=afGkv0IT4dU
That answer in the video has a parallel in Sky burial where the body is exposed in the wilderness to be eaten by birds and animals.

That practice is unpopular (and, more to the point, illegal) in countries which don't have enough wilderness etc.

Cremation is a standard practice in India and, apparently, was the practice in the Buddha's time. The Maha-parinibbana Sutta ends with the monks telling the local society to do as they see fit (which included cremation).

I think there is a "religious" aspect to it: a Christian might believe in resurrection of the body and therefore want their body buried instead of destroyed. A Buddhist is more likely to see the body as impermanent and not-self (on the other hand Buddhists do collect relics, see e.g. here and here).

As for ecology I suppose that burial is more carbon-neutral, but it takes land, cemeteries run out of space.