# 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/a6whada
Natural gatekeeper: How plants use root barriers to maintain healthy relationships
Scientists from the Max Planck Institute for Plant Breeding Research, the University of Cologne, and the University of Copenhagen have uncovered a hidden talent of the Casparian strip—a root structure best known for acting like a plant's security guard. It turns out this natural barrier also plays a key role in making sure legumes get the right amount of nitrogen from their bacterial partners. ⌘ Read more