Can adults learn a new language?

Related questions

1. How long does it take to finish duolingo Spanish?
2. Is duolingo good?
3. Is duolingo actually dangerous?
4. How fast can someone learn a language?
5. Can I download duolingo lessons?
6. Does duolingo get harder?
7. How many hours does duolingo take?
8. Is duolingo as good as Rosetta Stone?
9. Can you become fluent with duolingo?
10. How long does it take to become fluent in Japanese?

Tags

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2. #point
3. #often
4. #doesn
5. #pronunciation
6. #adults
7. #using
8. #cases
9. #agree
10. #completely
11. #happen
12. #native
13. #sources
14. #accent
15. #language
16. #foreign
17. #sounds
18. #adept
19. #possible
20. #learning
21. #young