Originally published on Tue November 22, 2011 10:04 am
Anthropologists say early humans who hunted and gathered had longer jaws to hold all those teeth.
Got a mouthful of metal and stack of orthodontic bills? You can thank your farmer ancestors for them.
That's according to an anthropologist who says the switch from chewing wild game to eating corn, rice and wheat could have shortened the human jaw so that teeth don't fit in it as well.
When agriculture took off in some parts of the world, it had a lot to offer people: Farmed foods are a more reliable source of calories, and are easier to chew and digest. But they also may have helped transform the jaw bone before the teeth could catch up.
A power struggle between Iranian President Mahmoud Ahmadinejad (right) and the country's supreme leader, Ayatollah Ali Khamenei (left, in portrait) is growing. There are signs that Khamenei may want to eliminate the presidency and replace it with the less powerful position of prime minister.
The next presidential election in Iran is scheduled for 2013, but doubts are emerging about whether it will actually take place.
A conservative member of Iran's Parliament recently claimed that a secret committee convened by Iran's supreme leader, Ayatollah Ali Khamenei, has been working on a plan to do away with the office of the presidency.
Meanwhile, the conflict between the supreme leader and President Mahmoud Ahmadinejad continues to sharpen.
Democratic Sen. Patty Murray, the supercommittee co-chairwoman, arrives to meet in the Capitol Hill office of Democratic Sen. John Kerry with other members of the deficit reduction panel on Monday.
Credit J. Scott Applewhite / AP
For the not-so-super debt reduction supercommittee, failure is clearly an option.
As the blame-gaming bipartisan congressional committee stumbled toward collapse Monday, washing out on even the most basic show of common purpose, the "what happens next" scenarios began to take shape.
With Thanksgiving hard upon us, now is a good time to think about our past. History writers can tell the best stories from centuries of human achievement and folly, yet too often they produce recitations of one damned thing after another. A few, though, combine a respect for accuracy with a deep understanding of the longings, fears and triumphs of the people of our past. Such books make magic.
U.S. President Barack Obama delivered remarks before signing legislation that will provide business tax credits to help put veterans back to work on Monday.
Credit Chip Somodevilla / Getty Images
President Obama has kept his distance from the supercommittee. Unlike the budget battles earlier this year, there were no bargaining sessions at the White House. No presidential motorcades to Capitol Hill.
Rep. Kevin McCarthy, the No. 3 Republican in the U.S. House of Representatives, has a very clear record on the Affordable Care Act. He has repeatedly called for its defeat and was one of the co-sponsors of the January repeal measure that easily passed the House but died in the Senate.