Two teenagers from opposite sides of the world made a special trip to the UN in Geneva recently to help mark 30 years of the Convention of the Rights of the Child – an international treaty that protects children from discrimination, violence and neglect.

More important, perhaps, Maria, from Mexico, and Zycrel, from the Philippines, have also been advising UN rights experts on a “child-friendly” version of the Convention, too.

They’ve been telling UN News’s Daniel Johnson why it’s important that young activists from all over the world, make sure their voices are heard.