The next day I was put on paid leave from my new job at Louisiana State University. This is very painful to me, though once again I understand the circumstances in which my employers find themselves in light of these actions taken against me.

I was devastated by the loss of my job in March, although I can understand why it occurred.

Is the Justice Department incapable of regulating itself? Without strong regulation, the privileges we give them to investigate us, to conduct their normal anti-crime things, can spiral out of control.

After eight months of one of the most intensive public and private investigations in American history, no one - no one - has come up with a shred of evidence that I had anything to do with the anthrax letters. I have never worked with anthrax. I know nothing about this matter.

Science has authority, not because of white coats, or titles, but because of precision and transparency: you explain your theory, set out your evidence, and reference the studies that support your case.

Starting on February 1, 2010, and running through until May 30, I will be Toronto Public Library's Writer in Residence, working out of the Merril Collection of Science Fiction, Fantasy, and Speculation at the Lillian H. Smith branch at College and Spadina.

From the age of 11, I was cleaning floors, washing dishes, making sandwiches and being a cashier. Survival was the name of the game. Life was so hard that I had to struggle to keep up my standards. Under these conditions, I didn't think about science too much.

I attended Florida State University on an academic and leadership scholarship, changed my major from biology to broadcasting, and transferred to the University of South Carolina for my last two years.