Development is, literally, the journey of a life time, and it is a trip still as mysterious as it is remarkable. Despite new methods to probe how an animal or plant forms from a single cell, biologists have much to learn about the unimaginably complex process. To identify some of the field's persistent riddles, Senior Editors Beverly Purnell and Stella Hurtley and the news staff of Science have consulted with developmental biologists on our Board of Reviewing Editors and elsewhere. The mysteries offered here are a humbling reminder that our knowledge of development remains to a great extent embryonic.
How Do Organs Know When They Have Reached the Right Size?
Why Do So Many Neurons Commit Suicide During Brain Development?
How Do Microbes Shape Animal Development?
How Does Fetal Environment Influence Later Health?
Mysteries of Development
Science 7 June 2013:
Vol. 340 no. 6137 p. 1156