Nephrite jade was considered more valuable than gold or silver. Nephrite jade in New Zealand is known as "pounamu" in the Māori language, and is highly valued, playing an important role in Māori culture. It is considered a "taonga", or treasure, and therefore protected under the Treaty of Waitangi. The exploitation of it is restricted to Ngai Tahu and closely monitored. The South Island of New Zealand is "Te Wai Pounamu" in Māori — "The [land of] Greenstone Water" — because that is where it occurs. Weapons and ornaments are made of it; in particular the "mere" (short club), and the
One of Our Planets Is Missing depart from this galaxy. "One of Our Planets Is Missing" is regarded by some entertainment critics to be "one of the best [shows] that animated [Trek] spin-off has to offer" and "a highly satisfying episode that nicely encapsulates the "Star Trek" philosophy. The show's "animation competently conveys the size and scope of the marauding cloud" which threatens the Federation world of Mantilles. Spock's "mind-meld with the cloud is both logical and satisfying, and Kirk and Spock's wrestling with the need to protect [all] life-forms is intelligent and provocative." Kirk even discusses the rationalisation for his decision "not to kill today"