# I am the Watcher. I am your guide through this vast new twtiverse.
#
# Usage:
# https://watcher.sour.is/api/plain/users View list of users and latest twt date.
# https://watcher.sour.is/api/plain/twt View all twts.
# https://watcher.sour.is/api/plain/mentions?uri=:uri View all mentions for uri.
# https://watcher.sour.is/api/plain/conv/:hash View all twts for a conversation subject.
#
# Options:
# uri Filter to show a specific users twts.
# offset Start index for quey.
# limit Count of items to return (going back in time).
#
# twt range = 1 1
# self = https://watcher.sour.is/conv/o56swmq
‘Absolute miracle’ breakthrough provides recipe for zero-carbon cement
Michael Irving, - New Atlas
_Stephan: Here is some very good news from Cambridge University. Most of us don't think much about cement as a problem but, as this article describes, it is a significant source of CO2 emissions, and this may be a solution to make it greener._
_Old concrete can be recycled in furn ... ⌘ Read more_