A fuel truck exploded after hitting portions of a bridge Thursday in the Saudi capital, Riyadh, engulfing buildings and cars in flames and killing at least 22 people and injuring more than 110, witnesses and officials said.

The death toll was a significant increase in the number of reported casualties than in the first hours after the 7 a.m. explosion near the Saudi National Guard building in an industrial area in the city's eastern district. Columns of smoke could be seen rising from scene.

Danish pharmaceutical company Novo Nordisk A/S says its net profit grew by 35 percent in the third quarter of 2012, chiefly spurred by strong sales of its diabetes drugs.

The world's biggest insulin maker says net profit during the period rose to 5.67 billion kroner ($983 million) from 4.2 billion kroner a year earlier.

Superstorm Sandy knocked out a quarter of the cell towers in an area spreading across 10 states, and the situation could get worse, federal regulators said Tuesday.

Many cell towers that are still working are doing so with the help of generators and could run out of fuel before commercial power is restored, the Federal Communications Commission said.

Zac Vawter considers himself a test pilot. After losing his right leg in a motorcycle accident, the 31-year-old software engineer signed up to become a research subject, helping to test a trailblazing prosthetic leg that's controlled by his thoughts.

He will put this groundbreaking "bionic" leg to the ultimate test Sunday when he attempts to climb 103 flights of stairs to the top of Chicago's Willis Tower, one of the world's tallest skyscrapers.

A Chinese government think tank is urging the country's leaders to start phasing out its one-child policy immediately and allow two children for every family by 2015, a daring proposal to do away with the unpopular policy.

Some demographers see the timeline put forward by the China Development Research Foundation as a bold move by the body close to the central leadership. Others warn that the gradual approach, if implemented, would still be insufficient to help correct the problems that China's strict birth limits have created.

Scientists say the Martian soil at the rover Curiosity's landing site contains minerals similar to what's found on Hawaii's Mauna Kea volcano.

The finding released Tuesday is the latest step in trying to better understand whether the environment could have been hospitable to microbial life.

Google is cramming a few more gadgets on to already crowded holiday shopping lists.

The devices announced Monday include the latest in Google's line of Nexus smartphones and a larger version of the 7-inch (17.78-centimeter) Nexus 7 tablet, which the company began selling in July. It's also adding cellular capabilities to the Nexus 7 and doubling the capacity of existing models.

Nokia says its Windows 8 phones will hit stores in Britain and France this week, before reaching Russia, Germany and other select markets in November.

The Lumia 920 and Lumia 820 are the ailing company's first handsets to use Microsoft's Windows 8 software, launched last week.

Authorities say a security guard at Tom Cruise's Beverly Hills, Calif., mansion used a stun gun on a trespasser who turned out to be an intoxicated neighbor who may have mistakenly entered the property.

Police say 41-year-old Jason Sullivan was shot with a Taser at about 9:30 p.m. Sunday at the home on Calle Vista Drive. He was then treated at a hospital and arrested on suspicion of trespassing.

Justin Bieber, Emma Stone, Tyra Banks and Josh Duhamel are honoring teenagers who give back to their communities.

Nickelodeon announced Tuesday that each star will pay tribute to a teen volunteer at the fourth annual TeenNick HALO Awards. It is presented to young people who are "helping and leading others."