Tired of wasting your time watching cat videos or scrolling through your Facebook newsfeed? Want to be more productive next time you go online?

Here's a list of websites that will actually make you smarter:

1. Digital Photography School — Read through this goldmine of articles to improve your photography skills; they're helpful even if you're a complete beginner. There's also an active forum where you can find a community of other photographers to connect with.

2. Duolingo — Sharpen your language skills with this fun, addictive game. It's a college-quality education without the pricetag. If you're looking for more free language-learning materials, you can also try BBC Languages.

3. Factsie — Did you know the horned lizard can shoot blood out of its tear ducts? Keep clicking through this site to find unusual historical and scientific facts, along with links to sources. Another great site for fun facts is Today I Found Out.

4. Freerice — Expand your vocabulary while feeding the hungry. It's the best way to feel good about yourself and learn words you can use for the rest of your life.

5. Gibbon — This is the ultimate playlist for learning. Users collect articles and videos to help you learn things from iOS programming to effective storytelling.

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