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This week, a Continental flight from Houston to Chicago used a biofuel blend made in part from algae, and Alaska Airlines will fly passengers using a fuel made in part from cooking oil. The fledgling environmental effort has many hurdles, as biofuel costs nearly six times as much as regular jet fuel.

In Pakistan, kidnapping is said to be part of the culture stretching back generations as a means to settle scores, extract favors or make money. But a series of high-profile, unsolved abductions in Lahore reveal a more sinister turn in the kidnapping enterprise.

The International Atomic Energy Agency failed to conclude definitively that the Islamic republic is engaged in a full-scale weapons program. But the agency said the evidence of hidden nuclear activity is growing, and the questions are deepening.

Abd al-Rahim al-Nashiri is the first Guantanamo detainee to have his case tried under the Obama administration's revamped rules for military commissions; he could be put to death if found guilty in the 2000 bombing of the USS Cole in Yemen. The trial is a test of whether a separate military justice system can provide the same impartial justice as a U.S. criminal court.

Voters in Ohio have defeated a new law that limits the collective bargaining rights of unionized public workers. Since the law hadn't taken effect yet, current union rules will remain in place. Ohio voters hope their outcome will send a message to other states considering similar laws.

Lowering payments to Social Security recipients would help slash budget deficits and even reduce wealth inequality. But there's little support among Democrats or Republicans, the young or the old for cutting the safety net.

As news outlets try to figure out what Tuesday's election results tell us about what voters are thinking, they're reaching various conclusions.

Abd al-Rahim al-Nashiri could get the death penalty if he's convicted. He's the first Guantanamo Bay detainee to be brought to trial under the Obama administration's revamped rules for military commissions.

The police department is investigating, a spokesman says. Meanwhile, it has released videos of its own showing protesters threatening officers during recent clashes.

A new U.N. report presents more evidence than ever before that Iran's nuclear program is geared toward military purposes. Yet the country has been hampered by both regional rivalries and its own economic and political problems.