Encyclopedia > Aozora Bunko: K

  Article Content

Aozora Bunko: K

See Aozora Bunko

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
1 E17 s

... orders of magnitude. Shorter times 3,500 million years -- age of oldest life (bacteria) 4,500 million years -- age of Earth (see: Precambrian) 10,000 million ...