title: postgis get geometries within a radius of meters using wgs84
body: <pre><code>select *
  from zones z
  where st_intersects(z.geom, st_Buffer(ST_SetSRID(ST_Point(     2.336031, 48.863172), 3857),1));
  </code></pre>
  
  <p>It looks like the '1' in the st_buffer is being interpreted as degrees, I need to find geometries within n meters of a given point.</p>
  
  <p>I did find a reference to a new function (st_Buffer_Meters) but that didn't seem to do anything different.</p>