He's a biologist.

This can include medical waste or samples of a microorganism, virus or toxin (from a biological source) that can affect human health.

And this is where my chasing animals for four, five years really changed my perspective from a clinician to what I am now, which is that play has a biological place, just like sleep and dreams do.

Noting with concern the high environmental costs and the often irreversible impact of illicit crops on ecosystems, including tropical zones in strategic areas, with high biological diversity and abundant forests,