ragweed

ABC: Manmade Global Warming Causing Worse Allergies

9/9/2008 9:54 AM ET

'World News' reports greenhouse gas emissions, higher temperatures creating more growth of ragweed.

'Today' Blames Global Warming for Rise in Food Allergies

10/25/2007 12:17 PM ET

NBC Chief Medical Editor Nancy Snyderman interjects global warming alarmism into subject of food allergies.