Developer gives first look at planned skyscraper near Grand Central Terminal -- but lacks key piece to make it a reality

It's build-or-bolt time for BXP on Madison Avenue. The developer is itching to build a skyscraper at 343 Madison between East 44th and 45th streets, which is currently a block-long, empty lot owned by the MTA. But it needs an anchor tenant before the striking, 46-story, 950,000 square-foot tower — designed by Kohn Pedersen Fox...