Article 4N86T How much energy does it take to produce 1 kilogram of the following materials?

How much energy does it take to produce 1 kilogram of the following materials?

by
from Hacker News on (#4N86T)
Comments
External Content
Source RSS or Atom Feed
Feed Location https://news.ycombinator.com/rss
Feed Title Hacker News
Feed Link https://news.ycombinator.com/
Reply 0 comments