Our tick nightmare

Ticks are exponentially expanding their territory, using us for their next blood meal. We must fight back. This episode was produced by Danielle Hewitt, edited by Amina Al-Sadi, fact-checked by Gabriel Dunatov, engineered by Patrick Boyd, and hosted by Sean Rameswaram. The common wood tick, which can transmit Borrelia and TBE viruses to humans and animals. Photo by Patrick Pleul/dpa/Getty Images.