06 January 2009
Vol 2, Issue 52

About The Cover

Cover image expansion

COVER To start the New Year, this week's Editorial Guide highlights research in 2008 that we consider to be Signaling Breakthroughs. Breakthroughs this year crossed a broad range of fields, including neuroscience, immunology, systems biology, and plant biology, and spanned the kingdoms of life. [Credit: Image Composition, Christopher Bickel, AAAS; Images and photos, Janice Carr, CDC; Jupiter Images]