In these times of youth climate marches and environmental role models still in their teens, it would feel to any youngster that it is upon their still underdeveloped shoulders that the weight of the world rests.Yet while their shouts reverberate across the seas from U.N. Summit halls and political podiums, theirs is a message of positivity, hope and strength. As parents and peers, it is our prerogative to nurture, inspire and empower these young activists to rise to the challenge.