Interesting how the opinions of the traditionally emission-happy HN comment section seems to have shifted: in 2017 the top comment pooh poohs renewables. in 2018 the top comment is kind of neutral (talks about showing differences between countries). And in this threads the current top comment (https://news.ycombinator.com/item?id=24749472 is clearly coal-critical.

This reflects my own experiences, eg questioning frequent air travel no longer gets you barrages of downvotes.