n The old switcheroo: Most European countries use a comma as we use a “decimal point.” And much of Europe uses a “decimal point” to separate groups of three digits in large numbers, in the way we use commas.

n Mixed-drink cocktails are a relatively recent arrival to American popular culture. They first became widely popular in the U.S. during Prohibition, when bartenders needed to mask the taste of bootlegged alcohol.

What are the world’s most common birds?

A) Chickens

B) Pigeons

C) Crows

D) Vultures

Thursday’s answer: According to Norse mythology, the realm of mortals (“Midgard”) is connected to the realm of the gods (“Asgard”) by “Bifrost,” which is a rainbow bridge.