186 by btrask | 184 comments on Hacker News.
New top story on Hacker News: Can you use a magnifying glass and moonlight to light a fire? (2016)
Can you use a magnifying glass and moonlight to light a fire? (2016)
186 by btrask | 184 comments on Hacker News.
186 by btrask | 184 comments on Hacker News.
0 comments:
Post a Comment