The two Andean bear cubs, Tremarctos ornatus (also known as the spectacled bear), that were born at the Smithsonian’s National Zoo in mid-January are getting ready for two big events: receiving their names May 19 and making their public debut May 22. After months of seclusion in their indoor den with mother Billie Jean, the two curious cubs have slowly ventured farther into their indoor enclosure, graduated to a few trips outdoors to explore their yards and are gearing up to make their...