Field workers spread locally-sourced bat guano fertilizer on biodynamically grown marijuana plants at the SPARC cannabis farm in Glen Ellen, Calif. on Friday, July 14, 2017. Erich Pearson's expansive ...

Your garden can benefit from the excretory droppings of bats, known as guano, which helps enrich your soil by providing carbon and energy to support helpful microbes. These microbes play a key role in ...

Two men from New York died from pneumonia they contracted from bat feces — after they used the excrement as fertilizer to grow marijuana, a new study found. The unidentified men from Rochester, ages ...

Doctors have reported two rare and fatal cases of histoplasmosis, a fungal disease linked to bat guano used as fertilizer for locally grown cannabis. Reading time 3 minutes Homegrown weed lovers ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Buried deep within caves, bats — and especially their ...