If the purpose of the universe was to create humans then the cosmos was embarrassingly inefficient about it.

People generally don't recognize how long it takes to conceive, publish, and write a book.

The greatest teachers are the ones that turn a B student into an A student, or a failing student into a B student.

Not everyone is going to like science as a subject.

A television advertisement must illustrate the scientific method to substantiate any claim.... That is why stains are lifted, ring-around-the-collar is removed, paper towels become soaked, excess stomach acid is absorbed, and headaches go away-all during the commercial.

With no gravitational force to work against, your body not only doesn't need the same amount of muscle and bone, it starts breaking them down. As on Earth, so in space: use it or lose it. And exercise may not solve the problem.

The universe is hilarious! Like, Venus is 900 degrees. I could tell you it melts lead. But that's not as fun as saying, 'You can cook a pizza on the windowsill in nine seconds.' And next time my fans eat pizza, they're thinking of Venus!