n Chew on these popcorn stats: For kernels to pop, their moisture content must be between 13.5 and 14.5 percent. Also required for popping is a pressure of about 9 atmospheres, achieved by the moisture inside the kernels turning to steam when heated. Most commercial popcorn kernels expand to 30-40 times their original volume when popped.

In which of these venues are you most likely to see the letters ASDF?

A) At a baseball game

B) Under an automobile hood

C) At the office

D) On a food label

Tuesday’s answer: At the moment of the 1906 San Francisco earthquake, San Francisco was the largest U.S. city west of the Mississippi River, ranking No. 9 overall.

Only subscribers are eligible to post comments. Please subscribe or to participate in the conversation. Here’s why.

Use the form below to reset your password. When you've submitted your account email, we will send an email with a reset code.