In This Week’s Observer…

Molly Jong-Fast embraces the Upper East Side with a $4.9 million co-op buy.

Baruch College’s president turns down a $2.4 million Fifth Avenue penthouse.

Elizabeth Stribling talks about marketing The Plaza’s condos.

Young families are fleeing New York City in increasing numbers.

The sale of 650 Madison could be the last big building deal of 2007.

Citigroup exits a floor of 666 Fifth.

How Daniel Doctoroff learned to love green building and congestion pricing.

Sam Chang keeps building hotels in New York City–he’s shooting for 50.