Here's a look at what was on the world's collective mind this year, based on Google's annual breakdown of the hottest searches:

OVERALL TOPICS

1. Former Los Angeles Lakers star Lamar Odom

2. Satirical magazine Charlie Hebdo

3. Mobile game "Agar.io"

4. Movie "Jurassic World"

5. Paris

6. Movie "Furious 7"

7. Video game "Fallout 4"

8. Former mix marital arts bantamweight champion Ronda Rousey

9. Caitlyn Jenner, formerly 1976 Olympic decathlon champion Bruce Jenner

10. Movie "American Sniper"

TOP PEOPLE

1. Lamar Odom

2. Ronda Rousey

3. Caitlyn Jenner

4. Singer Adele

5. Actor Charlie Sheen

6. Actress Ruby Rose

7. Republican Party presidential candidate Donald Trump

8. Singer Sia

9. Actress Dakota Johnson

10. Broadcaster Jeremy Clarkson

Online:

Google's top search lists: http://google.com/2015