People from all over the world were killed in the attacks on the World Trade Centre. They came from many different cultural, ethnic and religious backgrounds. Christian, Jewish, Muslim and Hindu believers were killed together as they worked in the towers.
It's a manic-depressive life. You run in here, you open your incubator, your experiment makes no sense, you think, 'I hate this job.' Then ten minutes later you think, 'Well, now, maybe I'll try this or I'll try that.' You do it because you know there will be an 'a-ha!' day.
I remember the day we found the gene for the inter-species signaling molecule like it was yesterday. We got the gene, and we plugged it into a database. And we immediately saw that this gene was in an amazing number of species of bacteria. It was a huge moment of realization.