Should humans be worried about the possibility of a meteor striking the Earth, and the results of impact? Why or why not?

What is the most surprising discovery found in this book?

How many galaxies are there in the universe? Is it likely that some contain intelligent life? Explain your answer.

Do all of Bryson's conclusions make sense? Why or why not?

Just over 100 years ago, humans believed that there was only one galaxy, the Milky Way. About 200 years ago, many people believed that man could never fly in a balloon or an airplane because it was "unnatural." What amazing new discoveries should be expected by the year 2115?

Many of the scientists in this book had colorful personalities. Give an example.

Several of the 18th and 19th century scientists Bryson discusses were not good at mathematics at all. Is math more important for scientists...