Incarcerated trans women won sweeping prison reforms in Colorado. It could be a model for other states.

In the debate over how to reduce sexual assault on university campuses, proposing self-defense classes for women is controversial. But, according to new landmark Canadian research, it works.

Two Iranian brothers worked as doctors to reform how Iran tackles HIV, moving the country toward the harm reduction approach. By providing clean needles and methadone, the doctors were able to lower infection rates, even in prisons.

The U.S. prison population is aging, which is costly because older inmates need more care. Some states have responded by creating special wards, having the young inmates care for the old, or building nursing homes.

Rampant misconduct by judicial systems across the country brought to light a crippling practice of debtors' prisons—where disadvantaged individuals unable to pay fines and fees were continually and wrongfully imprisoned, creating a vicious cycle. The American Civil Liberties Union stepped in to work with governments and private companies to increase transparency, eliminate abuse, and reeducate law enforcement officials. The state of Ohio has emerged as a leader in reforming debtors' prisons, though there is still work to do.

Many offenders get out of jail owing hundreds or thousands of dollars in court and parole fees but face barriers to financing and job acquisition, sticking them in a punitive, vicious cycle of debt and arrest. A program called the Clapham Set, perhaps paired with conditional cash transfers - may be a solution, as it erases fees for felons who complete rehab and job training upon release.

Felons get out of jail owing hundreds or thousands of dollars in court and parole fees, acting as an often insurmountable barrier preventing them from reintegrating into society and staying out of jail. What's worse, these fees often end up costing the state more than they produce. Two columns on a program called the Clapham Set, which erases or reduces debts for felons who take classes and job training.

2014 was a year marked nationwide by activism and unprecedented federal attention to the issue of campus sexual assault. The University of Texas system is putting $1.7 million into a comprehensive, multi-year effort to combat sexual assault on campus.

The prison system is designed to fail - and it does. On the positive side, there are programs all over the country that recognize that helping prisoners remake their lives is both humane and cost-effective.

More women are being incarcerated around the United States and that has spurred more institutions to create prison nurseries, which allow women to be with their newborns. It's not a new idea, but it's finding support among prison advocates as well as budget hawks because research shows nurseries can lower recidivism rates among mothers. The idea of children in prison remains controversial however.

A positive transformation in a Mississippi prison has become a focal point for a growing number of states rethinking the use of long-term isolation. Humanitarian groups have long argued that solitary confinement has devastating psychological effects, but a central driver in the recent shift is economics. Some officials have also been persuaded by research suggesting that isolation is vastly overused and that it does little to reduce overall prison violence.