Squigly Squigly's Brain Teasers

Question:

Are the Nobel prizes awarded every year, every 5 years or every 10 years?

Answer:

Every year.

Try another Brain Teaser:

Two trains are on the same railroad track; one is headed east the other west, they both leave the station at 1:00 and are travelling at the same speed. Yet they didn't crash into each other. How can this be?