Because it’s perfectly clear by now that you can’t scare politicians with the news that the world is ending. It’s going to require convincing them that something they really care about might disappear: their jobs.
In Japan, more than 2,000 family emblems derived from flowers and birds have been used since the Asuka period (6 to 8 century). The devices are similar to the badges and coats of arms in European heraldic tradition.
Family crests with a Ginkgo-leaf design are used in more than 100 patterns, classified by the number of leaves (1 to 16) and also by the arrangement of the leaves.