The arrival on Earth of Britain's newest prince may have cost the broadcast and television networks dearly in terms of additional technical crews, flights for reporters, and promotion, but all of it apparently did not buy big ratings. Clearly Fox News viewers were more interested in the royal birth than those who tuned in to the other cable news networks. Its audience climbed to 1.8 million at 4:00 p.m., when the official announcement from the palace was released. By contrast, CNN attracted 1.0 million viewers and MSNBC , just 426,000.