I cannot recommend enough for everyone who has a minimal sensibility towards the climate impact to read this thread: https://twitter.com/smdiehl/status/1350869944888664064 . Since we are inevitable heading over to a climate catastrophe it's really the time to advocate against bitcoin.
That thread is assuming that BTC runs on fossil, non-renewable energy, which was mostly correct ten to five years ago, but will be mostly wrong onwards. BTC runs mostly on surplus hydroelectric power. This may change based on what's locally available and the local cost of oil gas and coal, but when renewables will become cheaper than fossil (which will never be soon enough) it will not make any sense to mine on fossi…
Seems at least half of Bitcoin is currently mined directly using coal.