Cosmological Evolution

2/4/10 updated The Evolution of the Universe (3.3 MB pdf) by adding pages on the 2009 results of the WMAP All-Sky Map and the implications of dark energy.

5/2/10 updated my section on Cosmological Evolution by adding an external essay "Update on the State of Modern Cosmology" on the implications of Sean Carroll's new book "From Eternity to Here" and the Steinhardt-Turok Cyclical Multiverse theory on the nature of the Universe.

Global Ecology

9/29/11 updated Asian Air Pollution (3 MB pdf) by adding a page on China's nitrogen dioxide pollution in 2010.

11/16/09 updated The Aral Sea (2.8 MB pdf) by adding NASA true color and Bands 7,2,1 images of the Aral Sea acquired during 2009.

Supplemental Web Papers

6/17/11 added Prairie Memories: A Synthesis of Philosophy, Art, and Science (1.5 MB pdf) which addresses some of the implications of what modern science has for our traditional views of ourselves and our world.

6/6/11 updated Central Figures in the History and Philosophy of Science (1.4 MB pdf) by updating the images of the central figures covered in the paper.

5/25/09 updated Trilobites (1 MB pdf) by adding page on the discovery in Portugal of possibly the largest trilobite fossils known.