NUKEMAP is an interactive map using Mapbox API and declassified nuclear weapons effects data, created by Alex Wellerstein, a historian of science at the Stevens Institute of Technology who studies the history of nuclear weapons. The initial version was created in February 2012, with major upgrades in July 2013, which enables users to model the explosion of nuclear weapons (contemporary, historical, or of any given arbitrary yield) on virtually any terrain and at virtually any altitude of their choice. A variation of the script, NUKEMAP3D, featured rough models of mushroom clouds in 3D, scaled to their appropriate sizes. NUKEMAP3D is no longer functional as Google deprecated the Google Earth plugin.