'Nightline' Daily Line, Dec. 4: Kate Could Be in the Hospital for Several Days

6:01 p.m. ET: The sport of catamaran boat racing is now chasing a new group of fans - people who flock to the likes of NASCAR races.

"You can capsize these boats, you can crash them hard," said skipper Jimmy Spithill said. "These boats reward pushing hard. Push too hard: It can be catastrophic."

Read more HERE and watch Nick Watt's full story on Nightline TONIGHT

Credit: Getty Images

3:40 p.m. ET: Chasing ghosts: ABC's Linsey Davis went on a paranormal stakeout with the guys of Travel Channel's "Ghost Adventures." Get a sneak peek of the upcoming episode and watch the heart-thumping event HERE:

2:55 p.m. ET: ROYAL BABY UPDATE: Kate Middleton is "continuing to feel better" as she spends her second day at King Edward VII Hospital in London, according to St. James Palace. She may have to stay several more days to recover from severe nausea related to her pregnancy.

Updated story HERE

AFP/Getty Images

1:13 p.m. ET: Here it is, your first official look at Ashton Kutcher as Steve Jobs.

Credit: Sundance Institute/AP Photo

Why is Ashton Kutcher made-up to look like Steve Jobs? Read our entertainment editor Sheila Marikar's story HERE

11:29 a.m.ET: FLORIDA LOTTO MURDER TRIAL: The jurors hearing the murder trial of DeeDee Moore, the Florida woman accused of killing lottery winner Abraham Shakespeare, will be accompanied by a security escort into the courtroom after they told the judge that a witness and Shakespeare family and friends were making them feel uncomfortable outside the courthouse.

Read the latest HERE and watch the full story on "Nightline" TONIGHT

Credit: AP Photo

10:10 a.m. ET: In case you were living under a rock yesterday, Wills and Kate are expecting! The Duchess hospitalized overnight before as palace announced that a royal baby was on the way. Watch our Nightline report HERE: