From the CO2Science.org archive: No, not that Rush, LeePert Lifesonis. We mean Juncus Kraussi or Salt Marsh Rush which is a rush plant that grows well in salt water, one of three around the world with this feature. The kraussi variety is native to Australia, New Zealand, South Africa and South America and in our opinion it has a cool name that would be a good name for a band if it weren’t already partly taken. And other virtues: because it tolerates salt water well it is a valuable plant for stabilizing marshes and shorelines, as well as being an important source of fibre for weaving. And in 2020 there were two experiments showing that an additional 300 parts per million CO2 made it expand in a rush, boosting its growth by an astounding 720 percent, an average of one showing 516% and the other, in sea water with the salt level considerably raised, by nearly 10 times, at 924%. So this Salt Marsh Rush loves salt and loves CO2, and lucky for it there’s no sign of a shortage of either despite Greenpeace’s wacky attacks on chlorine, without which we’d have no salt, as well as carbon, without which we’d have no plants.