I See Hawks in LA in Studio B on May 4, 2012.

I See Hawks in Studio B on May 4, 2012.

I See Hawks In LA in Studio B on May 4, 2012.

The San Diego County medical examiner's office has confirmed Junior Seau's death was a suicide, The Associated Press reports. As we reported this morning, signs pointed to suicide, but the former NFL player did not leave a note or other obvious clues.

Seau died Wednesday of a self-inflicted gunshot wound to the chest, the AP says.

President Obama's voter-approval ratings certainly have been far from spectacular for much of his presidency, remaining mostly below 50 percent since November of 2009.

But on that dimension he may actually be doing better than it appears, at least based on some statistical modeling of presidential approval ratings conducted by George Washington University political scientist John Sides.

Forty years ago, only 1 in 3 American workers was a woman. Today, it's 1 in 2.

You know this already. But it raises interesting, subtler questions: What jobs did all those women get? And how did the gender breakdown change by industry over the past 40 years?

This graph answers those questions.

It shows how the gender breakdown changed in major sectors of the economy between 1972 and 2012.

The size of the circles shows how some sectors grew to include a larger share of the workforce, while others shrank in relative terms.

Two main themes jump out here.

If you thought the presidential primaries were extraordinarily negative, now there's statistical evidence that you were right.

A new analysis of TV ads finds that 70 percent of the messages were negative — a trend spearheaded by the heavily financed superPACs supporting the candidates. At this point in the 2008 election, 91 percent of TV ads were positive.