Turmoil in Europe continues, as it begins to look more and more likely that Greece will soon exit the eurozone. Yahoo CEO Scott Thompson resigned over the weekend, bringing yet another leadership change to the embattled tech company. New York City launches a bikeshare program sponsored by Citibank, which could prove to be profitable for both the bank and the city. JPMorgan executives face shareholders tomorrow in its annual meeting, the week after its announcement of a $2 billion loss. And endangered California condors are presenting special concern for wind farms.