The bishops of Massachusetts warned in a new pastoral letter that climate change has reached a crisis level and requires decisive action. They encouraged Catholics to embrace the message of stewardship in Pope Francis 2015 encyclical, Laudato si'.

"In our home state of Massachusetts, we are blessed with inspiring natural beauty from the seashore on the east coast to the majestic mountain vistas in the west - with rolling hills, vibrant communities and rich farmlands throughout the state," the bishops said.

They encouraged the faithful to reflect on this created beauty as a gift from God.

"To protect and sustain this gift we must act now within our faith institutions and throughout the state to take substantial, meaningful steps to protect our environmental [sic] and provide relief from the impact of toxic pollution and climate change to protect the health and safety of all citizens, particularly the most vulnerable in our society," they said.

Cardinal Seán O'Malley of Boston, Bishop Robert McManus of Worcester, Bishop Edgar da Cunha of Fall River, and Bishop Mitchell Rozanski of Springfield released a pastoral letter this week. They cited reports indicating that climate change has reached a point of unprecedented urgency.

This past July was the hottest month ever recorded, according to the National Oceanic and Atmosphere Administration, which found that worsening wildfires, hurricanes and heat waves could continue affecting the United States, leading to a more than $400 billion impact on the U.S. economy each year, if climate change is not addressed.

The bishops also noted that world food security is at risk, due to changes in climate, according the United Nations, which estimates that there may be as little as 12 years to significantly cut global emissions in order to limit the rising temperature of the earth and prevent more catastrophic consequences.

The Massachusetts bishops pointed to Pope Francis' encyclical Laudato si': On Care for Our Common Home as a model to follow in working to fight climate change.

In that encyclical, Pope Francis warns of increasing global temperatures and rising sea levels, saying, "Humanity is called to recognize the need for changes of lifestyle, production and consumption, in order to combat this warming or at least the human causes which produce or aggravate it."

With an eye to the Catholic principle of subsidiarity, the Massachusetts bishops called on individuals, schools, parishes and businesses to examine what they can do to be better stewards of the created world around them.

"Every person's actions will depend on their life circumstance and their commitment to protect our natural resources," they said.

"Families should discuss their concerns about the environment and how their lifestyle and consumption is contributing to the climate changes and other environmental degradation. Parishes should integrate Catholic social teaching on the environment in their liturgy and in their religious education program," they continued.

"Action is needed at all levels of government to encourage replacement of fossil fuels with renewable sources of energy while ensuring that the most vulnerable in society are protected from harm during this transition."

The bishops echoed Pope Francis' call for an "integral ecology," saying that such an ecology "respects the dignity of each person, identifies a moral obligation to protect the environment, and promotes social justice by supporting responsible economic development with respect for all people and the earth."