Call it progress or Atlanta's rapid trend toward Vancouverism — it's happening right now, and the changes are significant. Under pristine Saturday skies, we set out with a bicycle and semi-cooperative camera phone to visually relay the latest from the core of Midtown's construction boom — north of 10th Street, between The Connector and Piedmont Park. This isn't all-inclusive, so expect more roundups soon, as the Midtown crane invasion has just begun.