CBBC Newsround Online has spoken to some experts and put together tips about what you should do if something you've seen or heard in the news is worrying you or giving you nightmares.

If you're worried because of something you've heard in the news:

• Always check the facts if you hear a nasty story - it might not be true or it could be exaggerated.
• Remember that things in the news are often in the news because they don't happen very often.
• Discuss the news with your friends or chat about it on a message board. You'll be reassured that you're not the only one worried.
• You could also talk to your teacher about it - maybe you could have a class discussion which would help you understand the issue better.

If you're having nightmares or trouble sleeping because of something you've heard in the news:

• Tell your mum or dad - reassurance from them will make you feel much better.
• Try talking about your nightmare or even drawing it. This will help you to confront your fear.
• Surround yourself with things that make you feel secure at night - even if it is your old teddy bear that you keep hidden from your mates!
• Try to balance the news you read. If you read a bad story then try and read a happy one before you go to bed.