Posts by Mike

Photo Credit: NASA
Feb 27, 2009 Space 1 Comment

Marc Seigar sees relationship between black holes in galaxy cores and spiral arms

The distribution of mass in galaxy halos might affect how big the central supermassive black hole is, and how tightly wound the spiral arms are.

Image Credit: grendelkhan
Feb 20, 2009 Human World 2 Comments

Tyrone Hayes outlines the link between frog health and human health

This biologist sees a close connection between the health of frogs and the health of humans. Hayes studies how pesticides interact with hormones.

Image Credit: quapan
Jan 18, 2009 Human World 6 Comments

Kenneth Arrow asserts the economy is built on science

Hear Nobel laureate Kenneth Arrow talk abou the relationship between scientific innovation and economic progress.