Top Leading Issues Top Leading Issues en Copyright 2015 ProQuest LLC. All rights reserved. 09/05/2015 09/05/2015 SIRS 90 46 Knowledge Source Cellular telephones &title=Cellular telephones Cellular telephones 0000004158 Homework &title=Homework Homework 0000012354 Bullying &title=Bullying Bullying 0000033356 Animal welfare &title=Animal welfare Animal welfare 0000001287 Abortion &title=Abortion Abortion 0000000037 Marijuana, Law and legislation &title=Marijuana, Law and legislation Marijuana, Law and legislation 0000015900 Gun control &title=Gun control Gun control 0000011611 Same-sex marriage &title=Same-sex marriage Same-sex marriage 0000010818 Zoos &title=Zoos Zoos 0000029268 Advertising &title=Advertising Advertising 0000000264