Barnes & Noble is rolling out two new versions of its Nook tablet with sleek new hardware and a sharper high-definition screen. The bookseller's move heightens the already intense tablet wars heading into the holiday season.

Barnes & Noble said Wednesday that its new Nook HD will come in two sizes, one with a 7-inch (18-centimeter) screen (measured diagonally), starting at $199, and one with a new 9-inch (23-centimeter) diagonal screen, called the Nook HD+, starting at $269.

The new track built for Formula One's U.S. Grand Prix has been given the go-ahead for the November 18 race.

Circuit of The Americas officials announced Tuesday that the track located a few miles southeast of downtown Austin, Texas, passed its pre-race inspection by the Federation Internationale de l'Automobile, the sanctioning body for international motorsports.

Serie A champion Juventus lost its perfect record Tuesday after being held to a scoreless draw at fierce foe Fiorentina in a heated atmosphere at the Stadio Artemio Franchi.

Fiorentina had the better chances and midfielder Adem Ljajic should have put it ahead when through one-on-one with goalkeeper Gianluigi Buffon.

The prospect of Formula One racing in New Jersey, with its striking views of the Manhattan skyline, appears to be under threat.

A year after New Jersey officials forged a 10-year agreement to hold the race from 2013, F1 boss Bernie Ecclestone is quoted as saying they have failed to comply with the contract's terms and conditions.

Premier League champion Manchester City was eliminated from the League Cup at the first hurdle by Aston Villa on Tuesday, and Everton was beaten by second-tier club Leeds.

Villa beat City 4-2 after twice coming from behind to force the game into extra time, when Charles N'Zogbia and Gabriel Agbonlahor scored.

It's a campaign believed to be unprecedented in its size and aggressiveness: New York City is dispensing the morning-after pill to girls as young as 14 at more than 50 public high schools, sometimes even before they have had sex.

The effort to combat teen pregnancy in the nation's largest city contrasts sharply with the views of politicians and school systems in more conservative parts of the country.

The countdown is on for skydiver Felix Baumgartner. In just two weeks, the Austrian parachutist will attempt to go supersonic when he jumps from a record altitude of 23 miles (37 kilometers) over the U.S.

Baumgartner expects to reach a top speed of 690 mph (1,110 kph) and break the sound barrier with only his body.

NASA's future plans to explore Mars may end up using astronauts as space messengers.

The new idea surfaced as a special team looking for a new Mars robotic exploration plan released a preliminary report Tuesday.

A human finger found inside a fish at Idaho's Priest Lake has been traced to a wakeboarder who lost four fingers in an accident more than two months earlier.

Fisherman Nolan Calvin found the finger while he was cleaning the trout he caught Sept. 11. He put it on ice and called the Bonner County, Idaho, sheriff's office, the Spokesman-Review newspaper reported.

ABC says the next star of "The Bachelor" will be Sean Lowe, who was dumped on "The Bachelorette."

The network says the 28-year-old Dallas businessman will be the one doing the choosing when "The Bachelor" returns for its 17th edition.