CBS - Top News

John McCain's campaign office in Denver, Colorado, has received a letter containing a threat and "an amount of white powder in it," a McCain campaign spokesman told CBS News.

When you fill up your gas tank, are you actually getting all the fuel you pay for? That's the question our CBS News Investigative Unit and some affiliate reporters set out to answer all across the country.

New discoveries surrounding a type of "good" fat that promotes the burning of calories could one day lead to better treatments for obesity, researchers say.

Barack Obama says he's decided on a running mate, but he won't say who.

Spinach and lettuce sellers got the go-ahead from the FDA to treat their produce with just enough radiation to kill E. coli and other germs.

Spain has begun three days of mourning for the 153 people who died when a jetliner crashed shortly after takeoff in the nation's worst air disaster in nearly 25 years. The cause of the crash is still unknown.

The first pro basketball players to compete in the Olympics were called the Dream Team. This year, after only taking bronze in 2004, the U.S. team has a lot to prove, and has been dubbed "The Redeem Team," Barry Petersen reports.

Authorities say a 16-year-old student has died after a shooting at a Knoxville high school.

An ancient tar pit exposed when Venezuelan oil workers laid a pipeline has yielded a rich trove of fossils, including a type of saber-toothed cat that paleontologists had never found before in South America.

The mother of a missing central Florida toddler was released from jail on $500,000 bail and ordered to return to her parents' home, where authorities will monitor her with an electronic ankle device.

Tropical Storm Fay was lumbering offshore for what was likely to be a brief stay over the Atlantic Ocean's energizing waters. Forecasters expect the storm to complete its zig-zag course by hitting the coast for a third time in a week.

Armored personnel carriers and troop trucks blocked the bridge to the Black Sea port city of Poti, and Russian forces excavated trenches and set up mortars facing the city.

Many are complaining that the highly-hyped device has been letting them down, doing things such as dropping calls and loading Web pages slowly. Woes have also been reported with Nanos and Apple's MobileMe.

Clifton police say they arrested two men dressed liked ninjas and armed with Asian martial arts weapons who said they were sending a warning to drug users.

A Taliban spokesman claimed responsibility for the attack, one of the bloodiest yet in Pakistan's intensifying war with insurgent groups that are also destabilizing Afghanistan.

U.S. Secretary of State Condoleezza Rice and Iraq's foreign minister said Thursday that American and Iraqi officials agree that timetables should be set for a U.S. troop withdrawal, but that a final deal has not yet been set.

A 61-year-old Japanese woman gave birth to her own grandchild, using an egg donated by her daughter, a clinic said.

The nation's largest greeting card company is rolling out same-sex wedding cards - featuring two tuxedos, overlapping hearts or intertwined flowers, with best wishes inside. "Two hearts. One promise," one says.

After tightening his expenditures in June, Barack Obama spent far more freely in July, cutting into his cash reserves while mounting an advertising campaign against Republican presidential rival John McCain.