The script visualizes wildfires from Sentinel-2 data. It was published by Pierre Markuse on his blog  in August 2017.
 P. Markuse, Visualizing (Wild)Fires in Sentinel-2 imagery through EO Browser . August 2017.  P. Markuse, Visualizing Wildfires and Burn Scars with the Sentinel Hub EO Browser V2, May 2018