Demographic history of Japan before the Meiji Restoration papers of the Shōsōin (8th century) and others, as well as remnants of specific periods. Since Kyōto (or Heian-kyō) became the capital of Japan in 794, it has been one of the most important cities in Japan. Hiraizumi and Kamakura flourished under Northern Fujiwara clans (during 12th century) and Kamakura shogunate (1192 to 1333), respectively. The urban area of Kyōto suffered from the Ōnin War (1467 to 1477) and split into two districts, but coalesced into a great city of more than 400,000 inhabitants after the end of Sengoku period. The Christian missionaries led by Francis Xavier reported that the
Climate change in New York City invested to improve building energy efficiency, and an additional $1 billion allocated to preserving NYC's drinking water. New York in 2009 launched a task force to advise on preparing city infrastructure for flooding, water shortages, and higher temperatures. The New York City water supply system has been built to provide for its water needs. The NYC Mayor's Office Climate Policy and Programs team is investing $20 billion to adapt the city's neighborhoods to climate change threats like flooding, heat, and sea level rise. Reducing one’s carbon emissions is easier said than done. "An Inconvenient Truth" by Al Gore suggests several