Oh, the humanity: Allegedly because of CO2, people aren't sitting safely indoors watching TV this spring; now they're outside, enjoying the warm weather with their dogs, and they might encounter a wood tick

A Mild Winter Means a Longer Tick Season - NYTimes.com

“Last year at this time, people were sitting in their living rooms watching TV, but now they’re out in their neighborhoods, enjoying the warm weather with their dogs and wearing T-shirts,” Dr. Pollack said.

“It’s not that the warm weather has created more ticks,” he added, “but it has created the opportunity for both humans and ticks to be more active, and to make contact with each other.”