This document provides information about the MOL workflow for uploading data to Earth Engine and CartoDB.
Polygon simplification via PostGIS
1) import the shapefiles into a postgre datababse using shp2pgsql using flags -D -d -s 4326 http://postgis.refractions.net/docs/ch04.html#shp2pgsql_usage
2) Project the polygons using ST_Transform. We used Web Mercator (SRID 3857) http://www.postgis.org/docs/ST_Transform.html *note: this step is necessary because the ST_SimplifyPreserveTopology only works properly on projected shapes.
(from PostGIS In Action, Obe & Hsu 2011) "ST_Simplify and ST_SimplifyPreserveTopology assume planar coordinates. Should you use these functions with long lat data (SRID 4326), the resultant geometry can range from slightly askew to completely goofy. First transform your long lat to a planar coordinate, apply ST_Simplify, and then transform back to long lat."
3) Simplify the polygons using ST_SimplifyPreserveTopology
4) Export the polygons back to a shapefile (to view in ArcGIS) using pgsql2shp http://postgis.refractions.net/docs/ch04.html#id2627920
Moving data between CartoDB tables
I used the following SQL statement to copy data from an IUCN shapefile, uploaded to CartoDB as its own table, into the main polygons table.
I hope it will be of some use to you.