The Mollweide projection is available as d3.geo.mollweide in the geo.projection D3 plugin. The Mollweide projection is also used by the Sinu-Mollweide, Boggs eumorphic, Bromley, Goode homolosine and Wagner IV projections. See also the interrupted form as arranged by Goode, and Mollweide hemispheres. An interesting oblique aspect of the Mollweide projection is the Atlantis projection.
Changed /mbostock/raw/4090846/world-50m.json to a local referenece