Here's a harsh reality: "zero co2" nuclear emits massive amounts of CO2 during mining, during enrichment, creation of fuels, the massive motorcades that transport the fuels to their final power plant destination where they finally produce power without emitting CO2. So maybe its better for local air quality, but really the emissions are quite high.

The actual metric that reflects the total embodied energy, which is a much better proxy for CO2 intensivity, is Levelized Cost of Energy, and nuclear is typically one of the worst.

Not only does the high cost of nuclear reflect all the embedded energy, that high cost is taking money away that could be used for other energy saving and therefore CO2 reducing activities, like better insulation, upgrading equipment, smart grid, etc.

Also, lets look at the posts that are "minused" without explanation. https://news.ycombinator.com/item?id=38300495