1. Accounting for one-fifth of all land in the country, which is the largest state in the US?

2. The very first patent issued in Thomas Edison's name was for what?

3. The first cervical vertebra in the spine is named Atlas. Why?

4. Alexander Graham Bell disliked the use of 'Hello' as a greeting on the telephone. What did he prefer to use instead?

5. What's the difference between the hypocentre and the epicentre of an earthquake?

For the answers, please visit: ten things i didn't know until last week.