By Michael Yudell

“We will respond to the threat of climate change knowing that the failure to do so would betray our children and future generations,” an emboldened President Obama declared in his inaugural address Monday. Following the disconcerting absence of climate change from campaign 2012 and limited climate policy action during his first term, the president has finally told us that not only will he act, but that we (and he) have an obligation to do so. What could be more important, after all, than acting on behalf of our children and future generations?

But the New York Times is already reporting that, even in the wake of the president’s eloquence on the imperative to act now, his path forward will be a restricted one. Instead of focusing on comprehensive legislative change, Obama will use the power of his office to administratively “reduce emissions from power plants, increase the efficiency of home appliances, and have the federal government itself produce less carbon pollution.” He can do this by directing the Environmental Protection Agency, for example, to issue regulations to decrease coal power plant emission, a move likely to face a litany of court challenges.

These types of actions build on Obama’s important but limited success on climate change from his first term. The rise in fuel standards for cars and trucks will help reduce the amount of carbon and other climate-warming pollutants spewed into the atmosphere. And the United States is on track to reduce, over the next seven years, its carbon pollution by 17% (from 2005 levels), just as Obama promised at the Copenhagen climate talks four years ago.

By Janet Golden

Twenty years ago I appeared in the film Motherless: A Legacy of Loss from Illegal Abortion, talking about the history of abortion. The 28-minute documentary, embedded above, profiles three women and one man whose mothers died of complications from abortion before its legalization. The film also includes the testimony of a former chief physician at Philadelphia General Hospital recalling the 32-bed ward for women being treated for what he called “botched, criminal abortions.” Surprisingly, the film is still being used in classrooms, and its message - that the legalization of abortion following the Supreme Court’s Roe v. Wade decision saved women’s lives - is still relevant.

Tuesday is the 40th anniversary of the Roe v. Wade decision that found a woman’s right to an abortion fell within the right to privacy protected by the Fourteenth Amendment to the United States Constitution. The decision invalidated all state laws restricting access to abortion in the first trimester of pregnancy, allowed states to regulate second trimester abortions in ways related to maternal health, and permitted third trimester abortion restrictions including allowing states to outlaw them. You can hear the oral arguments and read the full opinion.

As everyone knows, in the decades since that decision, vehement debates over abortion and the cultural divide those arguments represent have grown ever more virulent. Abortion battles have taken lives, with the assassinations of abortion providers and the bombings of clinics in which abortions are performed.  State laws restricting abortion have increased in number, limiting access to safe, legal abortions and making abortion more expensive. But restrictions do not decrease demand. As the Guttmacher Institute points out, “By age 45, nearly half of American women will have an unintended pregnancy and nearly 1 in 3 will have an abortion.”

By Michael Yudell

President Obama's speech and executive orders were an important step forward to address gun violence. The president affirmed both his support for the Second Amendment and his commitment to quickly reduce gun violence in the wake of the national tragedies in Newtown, Aurora, Oak Creek, and Tucson.

As we’ve written here before, gun violence is a public health problem, and the president’s proposal — ban assault weapons and high capacity magazines, improve mental health services, close background check loopholes, and make schools safer — treats it as such.

Any changes to gun laws, including banning assault weapons and high capacity magazines, will have to be taken up by the legislative branch, and the president promised on Wednesday to push Congress to do just that. It will be a hard road ahead to pass such legislation, but hopefully our elected officials pay attention to the national mood on gun safety matters.

By Janet Golden

In 1918, Babe Ruth pitched the opening game of the World Series for the Boston Red Sox (they won the series) and a worldwide flu pandemic got under way, with over 500 million people stricken with the infection. A digital encyclopedia of that disaster — the flu, not the subsequent trade of Ruth to the Yankees — was launched last year by the University of Michigan Center for the History of Medicine.

Now, with a serious seasonal influenza outbreak in the United States, we can be grateful that since 1918 we’ve developed effective preventive vaccines and have new anti-viral drugs, as well as excellent flu tracking and public information campaigns such Elmo & Rosita on the right way to sneeze. A ton of information is online.

Unfortunately, one of the key measures recommended by the Centers for Disease Control and Prevention — staying home for at least 24 hours after your fever is gone, except to get medical care and for other necessities - is not an option for too large a number of Americans.  Millions of people lack access to affordable medical care. And millions of workers lack paid sick days; they risk losing their jobs and their family income if they stay home, even when sick with a contagious and dangerous ailment.

By Jonathan Purtle

In a box in my basement — amongst a broken TI-83 calculator, Discman, and other college-era artifacts — is a poster entitled “Forever 27.” Once ubiquitous in dorm rooms, the poster depicts Jimi Hendrix, Janice Joplin, Jim Morrison, and Kurt Cobain in a Daliesque purgatory at the age when all of them died after bouts with substance abuse: 27 years old. In addition to being a tribute to rock legends, the poster embodies the popular belief that fame and fortune lead to excess consumption, which occasionally leads to an early, but glamorous, demise.

While there is probably some truth to this logic, a study published last month in the open-access medical journal BMJ Open suggests that something far earlier in their lives — exposures to extreme stress during critical periods of childhood development — may be behind a substantial portion of rock stars’ premature mortality.

These kinds of stressors are known to trauma researchers as ACEs. The name comes from the Adverse Childhood Experiences study, a large research project started in the 1990s that discovered a strong, graded relationship between childhood trauma and stress  and the leading causes of adult death in the United States. The research spawned many other studies, and we have written about several on this blog.   The original research  designated each type of trauma or stressor — growing up with an alcoholic parent, for example, or being physically abused or neglected — as an ACE.  Among the ACE study’s findings, adults who'd experienced one ACE as children were twice as likely to have become addicted to illicit drugs at some point in their lives than people who'd experienced zero ACEs. Those with three ACEs were over three times as likely; a person with five or more ACEs was nearly eight times as likely to have become addicted. A similar relationship was identified between ACEs and alcohol abuse.  

The recently published research on early deaths among rock stars is part of a larger study of 1,489 pop stars who achieved fame between 1956 and 2006 (Elvis Presley to Amy Winehouse). The authors investigated 137 cases of musician mortality in that group. Using biographic information from a variety of sources, they determined each star’s ACE score — it's based on a standard set of 10 questions — and whether their death was “substance abuse or risk related.”

By Michael Yudell

Late last month my wife and I packed up the car with our two girls and dog and headed south for Grandparents-palooza. It’s our annual weeklong visit to South Florida, a land where the pastrami is neither too lean nor too fatty, drafts seem to be everywhere, and we get to leave the kids with the grandparents for a few nights of parents-of-young-kids' most precious commodity: uninterrupted sleep.

With all the shuffling around between two sets of grandparents' homes and cars, and watching my mom and father-in-law try to install car seats with some twine, Elmer’s Glue, a power drill, and lots of T.L.C., I realized just how difficult it is to properly install a child safety seat. And reading up on the topic, I discovered just how often it's not done properly, even when you think it is – and how dangerous that ignorance can be.

Problems installing car seats are not limited to my parents’ generation, a time before these things were commonplace. I like, many of you out there, went home from the hospital in my mother’s arms, not a special seat. Today, if you have a child young enough to ride in a car seat, the chances are that it – and/or your child – is not correctly restrained. According to the National Highway Traffic Safety Administration, “3 out of 4 car seats are not used correctly.”

By Bette Begleiter and JoAnne Fischer

When Claire Danes, star of the critically acclaimed Homeland, became pregnant at the height of the show’s success, did she lose her job? The pregnancy certainly did not fit into the plot of this action-packed thriller and could easily been seen as a serious impediment to character Carrie Mathison's ability to pursue and take down terrorists. But Danes continued in her role thanks to a clever wardrobe, strategic camera shots, and many other accommodations that the producers and directors made to work around her growing belly. 

Not all pregnant women are so lucky. 

Under current law, U.S. employers are not required to make even minimal accommodations for pregnant women, leaving many with no choice but to leave a job that they truly want or need.

How did we get here? 

Nan Feyler is chief of staff for the Philadelphia Department of Public Health.

By Nan Feyler

Lead poisoning of children continues to be a serious health problem – and one that science has linked to lower and lower levels of exposure even as government has opted for greater and greater cuts in prevention programs.

Each year, thousands of children in the Philadelphia region alone are poisoned, most often from deteriorated paint and dust in older homes where lead paint remains under layers of newer lead-free paint. Chipping and peeling paint due to age, overdue or poor maintenance, unsafe remediation or wear and tear on well-used areas like doors and windows can create poisonous lead dust that, while often invisible, accumulates on surfaces throughout the house, putting young children and babies at risk.

Philadelphia’s new Lead Paint Disclosure and Certification Law, which went into effect on Dec. 21, is intended to reduce the risk of lead poisoning in children who live in older rental properties in the city. Section PM-305 of the Philadelphia Property Maintenance Code already requires landlords to correct any peeling paint, cracked or loose plaster, decayed wood, and other defective surface conditions in a rental unit. Yet each year hundreds of children in Philadelphia are poisoned from exposure to lead paint and lead dust in the homes that their families rent.

Janet Golden, a Rutgers University history professor, specializes in the histories of medicine, childhood and women.

By Janet Golden

Things to talk about when we talk about Newtown, mental health, and guns:

1. “The vast majority of violence in our society is not perpetuated by persons with serious mental illness.”