At what wind speed does a tropical storm become a hurricane?

More Questions:

What puzzle toy, invented in Hungary, was the best-selling toy of 1981?

A Kamikaze cocktail contains vodka, triple sec and what?

What does the abbreviation MPEG stand for in the video and audio compressing format?

How many stripes are there on the US flag?

Kiwano is a type of what?

On which wedding anniversary would you buy your partner leather?

What kind of fruit juice is used to mix a Bronx Cocktail?

Who gave Impressionism its name with his 1873 painting "Impression, Sunrise"?

Cushat, Rock and Stock all types of which creature?

What invention is Arthur W. Savage often linked with?

Gunpowder, paper, and soy sauce were all invented in what country?

What is the name of King Arthur's sidekick in the 1975 movie "Monty Python and the Holy Grail"?

What man received the Nobel Peace Prize in 1964?

What does the "c" in the equation "e=mc2" stand for?

What country borders Central African Republic to the west?