years (and years) ago
21Formation and evolution of the Solar System — Artist s conception of a protoplanetary disk The formation and evolution of the Solar System is estimated to have begun 4.568 billion years ago with the gravitational collapse of a small part of a giant molecular cloud …
22List of Doctor Who universe creatures and aliens — This is a list of fictional creatures and aliens from the universe of the long running BBC science fiction television series Doctor Who, including Torchwood, The Sarah Jane Adventures and K 9. It covers alien races and other fictional creatures,… …
23Craters of the Moon National Monument and Preserve — For other uses, see Craters of the Moon (disambiguation). Craters of the Moon National Monument and Preserve IUCN Category III (Natural Monument) …
24Characters of Final Fantasy X and X-2 — Main characters of Final Fantasy X as shown from left to right: Kimahri Ronso, Rikku, Auron, Yuna, Lulu, Tidus and Wakka …
25Geology and Geochemistry — ▪ 2008 Introduction Diamond inclusions in ancient terrestrial rock provided clues about the early history of Earth s crust. Scientists studied slow earthquakes and the crystalline structure of Earth s inner core. International scientific studies… …
26Marine geology of the Cape Peninsula and False Bay — Contents 1 Introduction 2 The geological structure of the region 2.1 Malmesbury group deposition 2.1.1 Appearance of the exposed Malmesbury group rocks …
27List of Doctor Who monsters and aliens — This is a list of monsters and aliens from the long running BBC science fiction television series Doctor Who . The list includes some races which are not extraterrestrial, but are nonetheless non human. This list is meant to cover alien races and …
28Plows, Plagues and Petroleum — Plows, Plagues and Petroleum: How Humans Took Control of Climate is a 2005 book published by Princeton University Press and written by William Ruddiman, a paleoclimatologist and Professor Emeritus at the University of Virginia. He has authored… …
29Wikipedia:Manual of Style/Dates and numbers — Shortcuts: WP:MOSNUM WP:DATE MOS:NUM This page is part of the Ma …
30Identity and change — The relationship between identity and change in the philosophical field of metaphysics seems, at first glance, deceptively simple, and belies the complexity of the issues involved. This article explores the problem of change and identity . Change …
