If even hearing the word “ragweed” makes your eyes water, you might be one of the nearly 45 million Americans with seasonal allergies. Researchers say climate change is fueling the rise in allergies and asthma…Dr. Leonard Bielory of Rutgers University has been studying the connection between pollen levels and the throngs showing up at his office. “I saw a hidden signal in the pollen count changing over time. And I started correlating that we’re seeing patients earlier and more patients – the volume seems to be increasing. And some who were moderate or mild in years past are now more severe,” he said.