In a cave full of flying bats, why don't they get in each other's way?
On city sidewalks we can walk without bumping into each other. Is that Swarming?
Planning a walk in the woods? Some tips on avoiding ticks.
Disease-carrying ticks can be active year-round.
Since this report was initially filed, the CDC now estimates there are 300,000 cases of Lyme in the US each year.