I spent more than 20 years of my professional career researching and developing renewable energy sources.

I spent 10 years working on a math Ph.D., and I finally got kind of good at it.

The most important factors for a long life, I think, are partly in the genes; number two is lifestyle, which includes healthy diet and regular exercise. I walk, run and swim every day. However, I think too much exercise is also unhealthy because of over-stress; sometimes people who exercise too many hours per day die early.

Taking care of my body and my health is my full-time job.

Anything you care about, from vacation plans to exercise to the best Ethiopian restaurant, is going to be guided by your individual search history.

Increasingly, over the past ten years, I've come to take the view that a cultural perspective is intrinsic to the future of language teaching and learning, especially in the case of English, as it becomes increasingly global.