Success on the Web require high-level corporate understanding of the Internet's capabilities and support of early test-and-invest projects.
Understanding science and pushing the boundaries of science is what makes me immensely satisfied.
I don't think I would have spent time learning about the immune system if understanding vaccines weren't something I considered very important.
My fascination is broadly with biology and the fact that our increased understanding of biology allows for breakthroughs in a broad set of diseases.
Going out in the field, it's always enlightening to see what's working and what's not and to sit down and talk - I was with young girls in south Africa - understanding why our tools for prevention aren't being adopted, and what way may need to invent to help protect them.
The scientific understanding of some of these [childhood] diseases is advancing quite rapidly. There's some things like premature birth or nutrition, first day deaths that we need a lot more insights so that we can build the tools to solve those problems.