@lyse Thanks for sharing. I really enjoyed it. The beginning part about the history of life on Earth was fun to watch having just read Dawkin's old book The Selfish Geene, and now I want to read more about archaea. The end of the talk about what might be going on on Mars made me a bit hopeful someone will find some good evidence.

@prologic I think printf is a more portable option than echo -e for interpreting \t as tab. E.g. printf '%s\t%s\t%s' "$url" "$time" "$text". In general I always prefer printf over echo for anything non-trivial in unix shell scripts. See last paragraph of https://en.wikipedia.org/wiki/Echo_(command)#History

@quark None. I like being able to see edit history for the same reason.