The sky is teeming with life. Why hasn't anyone visited earth yet? What will they look like if they do come? How will we communicate with them?
The sea is teeming with life. What's down there? The sea is more alien than the moon or mars. More people have visited the moon than have been to the bottom of the sea. More robots have explored Mars than the Marianas Trench. Aliens are closer than you think.
The earth is teeming with life. How do six billion people survive and prosper? It ain't brain surgery. Health is a team sport. Don't sit on the bench.
Reflections of a rocket scientist. Essays on science, engineering and medicine—accessible to young adults, but meant for everyone.