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By Marianne Comfort, member of the Mercy Justice Team

Mercy schools in Jamaica offer inspiration for how educational institutions can adopt environmentally sustainable practices in response to our critical concern for Earth. 

Alpha Primary School, Jessie Primary School, Alpha Academy and the Alpha Vocational Training Centre share one campus in the capital city of Kingston. 

This year 10 clearly marked recycling bins were installed on the property to engender a culture of recycling and sustainable waste management among students and staff.  

Guided by two gardening experts, students from the four schools planted a variety of trees and other plants in a memorial garden that honors sisters who had been instrumental to the schools’ success. Throughout this process, students learned the plants’ features, names, uses and more.  

Older students formed groups in which they designed and planned campaigns to tackle water shortage, waste management, deforestation and other issues.  

Finally, students took turns making personal pledges to engage in actions that mitigate the effects of climate change. 

The schools look forward to creating more opportunities for students and staff to care for the Earth, including through a compost heap now being planned. 

August 2025

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Critical Considerations

Are we doomed to a perpetual nuclear arms race?

Karen Donahue, RSM

The world reached a grim milestone this month with the 80th anniversaries, on August 6 and 9, of the obliteration of the Japanese cities of Hiroshima and Nagasaki by U.S. nuclear weapons, thus ushering in the nuclear age. In a recent article posted on the TomDispatch website, Eric Ross, organizer, educator, and PhD candidate in the history department at the University of Massachusetts Amherst, raises some troubling questions: why was there so little dissent from the scientists at Los Alamos, and what does that mean for us today?

However, there was some dissent. In June 1945, a group of scientists at the University of Chicago’s Metallurgical Laboratory, one of several teams working on various aspects of the bomb’s development, spoke out. Led by physicist James Franck, they sent a report to Secretary of War Henry Stimson “warning of the profound political and ethical consequences of employing such a bomb without exhausting all other alternatives.” By this time, it was clear that Germany, already defeated, had not developed a nuclear weapon. The prospect of a potential German atomic bomb had been the impetus for the Manhattan Project.

These scientists understood “that the atomic bomb wasn’t just a more powerful weapon but a fundamental transformation in the nature of warfare, an instrument of annihilation.” They recognized that the use of such a destructive weapon without sufficient military justification would undermine U.S. credibility in future arms control efforts. They also “observed that the development of the bomb under conditions of extreme wartime secrecy had created an abjectly anti-democratic situation, one in which the public was denied any opportunity to deliberate on such an irrevocable and consequential decision.” Nevertheless, Ross ends on an encouraging note: he says, “This history should also remind us that the development and use of nuclear weapons was not inevitable. There were those who spoke out and a different path might well have been possible. While we cannot know exactly how events would have unfolded had dissent been amplified rather than suppressed, we can raise our own voices now to demand a safer, saner future.”

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Love and care of creation in local ecologies

Rose Marie Tresp, RSM; Institute Justice Team

I recently attended the day-long “Fourth Annual Lake James Watershed Symposium”. The Lake James watershed includes the local area in North Carolina where I live. Our area is called the Catawba River Basin; I have been a member of the Catawba Riverkeeper Organization for several years. Catawba Riverkeeper is the only non-profit, on-the-water advocate for the entire 8,900 miles of waterways in the Catawba-Wateree River Basin that provides accurate, science-based information about our water and the issues affecting it.

The Symposium was held at the North Carolina School of Science and Mathematics in Morganton, NC about an hour’s drive from here. Generally, the programs I attend and the work I do are either on the macrolevel of climate change, its causes and alleviation, or the focus is on the microlevel of personal and organizational practices with the mantra of reduce, reuse, and recycle. But this symposium was quite different as its focus was on the middle level of conservation research and practices.  There were several short presentations on research about conserving and protecting the local ecology. One presentation was on the design of hiking trails. A bad hiking trail is one that leads to erosion and flooding. Another presentation was assessing and changing the route of streams since some streambed routes can cause more erosion and flooding. Another presentation was on the design of a local park so that heavy rains do not flood the housing development below the park. I really had never thought of these issues. I thought hiking trails just happened where it was convenient.

I also found it interesting that no one talked about or mentioned climate change. Clearly these people loved the land and volunteered in different ways to protect and conserve the land and water. Programs were designed and carried out to involve the youth in conservation. But maybe some of those attending really were not sure about climate change.

The themes of this symposium can remind us of a passage in Laudato Si’:

The entire material universe speaks of God’s love, his boundless affection for us. Soil, water, mountains: everything is, as it were, a caress of God. The history of our friendship with God is always linked to particular places which take on an intensely personal meaning; we all remember places, and revisiting those memories does us much good. Anyone who has grown up in the hills or used to sit by the spring to drink or played outdoors in the neighborhood square; going back to these places is a chance to recover something of their true selves. (84)

I am very glad that I attended this symposium; I will try to attend next year’s symposium. I learned a lot about the local ecology that I live in. I encourage everyone to seek out and support the local, non-profit conservation organizations in your area.

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Church document ahead of COP 30

Marianne Comfort; Institute Justice Team

Church leaders in the Global South are taking a strong role in the lead-up to this year’s international climate talks (COP 30) in Belem, Brazil.

Mercy Sister Rosita Sidasmed of Argentina participated in conversations that contributed to Climate Justice and the Common Home: Ecological Conversion, Transformation and Resistance to False Solutions. This document was first drafted by Church leaders in Latin America and the Caribbean, endorsed by bishop conferences in Africa and Asia, and then endorsed by the Vatican.

The document rejects the commodification of nature and extraction of minerals for renewable energy technologies as “false solutions” to the climate crisis. It instead demands that rich nations pay their “ecological debt” to countries most harmed by climate change; promotes phasing out fossil fuels and fairly taxing those who have benefited from these industries; calls for the defense of Indigenous peoples, ecosystems and impoverished communities; and recognizes climate migration as a challenge of justice and human rights. The authors invite everyone to “adopt a new lifestyle marked by joyful simplicity” that focuses on “living a productive and supportive life, in peace and harmony with our brothers and sisters and with ecosystems.” Specifically, they call for reducing unnecessary consumption and challenging military investments; fostering spiritual experiences of contemplation and love for all creation; working with scientists to respond to local, regional and global needs; encouraging food, energy and cultural projects; and promoting narratives of hope and common care.

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Article Archive

2025

August

Critical Considerations:

Are we doomed to a perpetual nuclear arms race?

Love and care of creation in local ecologies

Church document ahead of COP30

July

Critical Considerations:

What’s at stake in Israel’s destruction of Gaza?

Have you heard of Black August?

DEI—Diversity, Equity, and Inclusion

Mercy Life Gathering in Panama

June

Vampires, Sharecropping, and the Real History of Juneteenth

Protecting Children and Vulnerable Adults from Abuse in the Philippines

Critical Considerations:

What’s really driving border enforcement?

May

A letter to Pope Francis

Critical Considerations:

Is this really an emergency?

Trump’s attacks on women

April

The cultural battle advances

Critical Considerations:

What’s going on with tariffs?

Water extractivism in Palestine

March

Hope for Panama in truth

Deportation stigma in Jamaica

Critical Considerations:

Who benefits from tax cuts? Who pays?

April is SWANA Heritage Month

NETWORK webinar on U.S. federal policy

February

National declaration of emergency in Bajo Aguán

Critical Considerations:

Has the United States declared war on immigrants?

What energy emergency?

January

If you make a mess, clean it up! (Advocacy success in NY)

Youth claim climate victory in Montana court

Critical Considerations:

Was January 1, 2025 a wake-up call?

(click years to expand)

2024

December

Gender and climate justice

Critical Considerations:

Is the United States becoming a plutocracy?

Making nuclear weapons taboo

November

Critical Considerations:

What happened on November 5, 2024?

The Ecological Debt

October

Overturning the Chevron deference

Critical Considerations:

Who are the Israeli settlers and what motivates them?

Assassination of Honduran water protector deeply grieves Sisters of Mercy

September

God walks with his people: National Migration Week September 23–29

Critical Considerations:

What does CEO compensation say about corporate priorities?

Anxiety – election season can heighten it!

August

Critical Considerations:

What is Project 2025 all about?

Working to stop weapon exports to Haiti

Beyond Voting:

Participating in Elections, part 2

July

Critical Considerations:

Is there a better way to spend $91 billion?

Education, Agriculture, & Emigration in the Philippines

Beyond Voting:

Participating in Elections, part 1

June

Critical Considerations:

Are we creating a prison-industrial complex?

Conscience

Mercy student videos address the Critical Concerns

May

Critical Considerations:

Degrowth is the only sane survival plan

Argentina and the government of hate

Listening to a chorus of voices

April

Critical Considerations:

An Israeli Jesuit reflects on war in the Holy Land

Advocacy Success! Expanded Background Checks for Gun Sales

March

Military spending and national (in)security

February

The challenge Gaza war presents for American Jews

January

Gaza war threatens credibility of West’s commitment to human rights and the rule of law

2023

December

Climate Summit fails to adequately respond to gravity of climate crisis

November

Critical Considerations:

The dangers of conflating Anti-Zionism and Antisemitism

Red flag laws in jeopardy: faith voices speak to save them

October

Jewish and Palestinian perspectives on Gaza crisis

September

U.S. China tensions impact efforts to address climate change

August

When Good Economic Policy Isn’t Enough

July

States Move to Weaken Protections for Child Workers

June

Corporate Lobbyists at Climate Talks

May

Electric Vehicle Transition Challenges

April

Repudiating the Doctrine of Discovery

March

Misrepresenting War

February

The Rise of Christian Nationalism

January

How the News is Reported Affects What We Know

2022

December

How Corporations Took Over the Government

November

The Independent State Legislature Theory Explained

October

The Next Phase in the Voting Wars


Local Justice News & Upcoming Events

Check back soon!


Mercy Justice Resource Pages

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By Jason Giovannettone, Climate and Sustainability Director

Dr. Tracey Woodruff from the University of California in San Francisco recently published an article about effective ways to reduce exposure to microplastics.

We have covered the concern of microplastics in previous Green Tips articles, but if you are interested in reading more refer to this article: “Effects of Microplastic Exposure on Human Digestive, Reproductive, and Respiratory Health: A Rapid Systematic Review.”

Some suggestions for reducing your exposure to microplastics include:

  • Eat food prepared at home to minimize processed and fast foods. 
  • When eating out, look for restaurants that are trying to be more sustainable, especially in the use of non-plastic packaging (e.g., Wendy’s uses customer-facing packaging made from cardboard sourced from sustainably managed forests). 
  • Look for condiments that come in glass jars. Minimize your overall consumption of foods packaged in plastic. 
  • Pack your own meals when traveling.
  • Microwave food in glass instead of plastic containers.
  • Minimize the purchasing of frozen vegetables in plastic packaging.  At a minimum, transfer frozen vegetables to a non-plastic container prior to microwaving.
  • Avoid purchasing water packaged in single-use bottles.
  • Resist the urge to use plastic produce bags when purchasing fresh fruits and vegetables.
  • Cook food in stainless steel or cast-iron instead of nonstick pots and pans.
  • Eat as low in the food chain as possible (e.g., fruits and vegetables). Larger animals and fish tend to have higher concentrations of harmful chemicals.
  • Dust often and use a vacuum with a HEPA filter. Microplastics in the air tend to cling to dust, so it is important to remove dust and to use a vacuum that can filter very fine particles from the air.
  • Use fragrance-free cleaning and personal care products.

Attempting to follow all of these suggestions can seem like a daunting task.  Try to address one at a time until they eventually become a necessary habit.

By Jason Giovannettone, Climate and Sustainability Director 

As we move into warmer months, many of us are finalizing travel plans for the summer. The way we travel though can have a substantial impact on the environment. So how do we know when to take a train, plane, automobile, or bus? We will consider this question from the standpoint of trying to minimize the amount of greenhouse gas emissions created. 

Emissions due to travel are dependent on the following:  

  • fuel mileage (miles per gallon or mpg) 
  • the amount of gas emissions created for each gallon of fuel, or each kWh of electricity used 
  • the number of people traveling with you.  

1. Fuel Mileage: Fuel mileage varies considerably depending on the type of transportation and the extent to which transportation depends on electricity vs. liquid fuel (e.g., gasoline, diesel, jet fuel). The average estimated mileage for various transportation and fuel types is given below: 

  • Automobiles (all): 28.3 mpg 
  • Automobiles (hybrid): 50.0 mpg (represents the low end of the expected range of fuel mileage for a 2024 Toyota Prius, which can get up to 57.0 mpg.) 
  • Domestic Flights (jet fuel): 0.50 mpg 
  • Transit Trains (diesel): 6.9 mpg 
  • Amtrak Trains (electric): 0.10 miles per kWh 
  • Transit Bus (diesel): 4.0 mpg 
  • Intercity Bus (diesel): 6.4 mpg 

2. Carbon Emissions per Gallon: This measures the carbon emissions that are created for each gallon of fuel or kWh of electricity consumed. Estimates are given below as pounds of carbon dioxide equivalent (CO2e) per gallon of fuel or electricity. Note: the term “carbon dioxide equivalents” refers to the combined impacts of all greenhouse gases. 

  • Gasoline: 20.86 pounds of CO2e per gallon 
  • Diesel: 22.45 pounds of CO2e per gallon 
  • Jet Fuel: 21.50 pounds of CO2e per gallon 
  • Electric: 0.81 pounds of CO2e per kWh 

3. Number of People: If you are in a car with one other person, you are responsible for half of the emissions created during the trip. If you are on a plane with hundreds of people, you are responsible for a smaller portion of the emissions created by the plane. The values provided below are rough averages of the number of passengers per transportation type and are only provided as examples. 

  • Automobiles (all): 1.5 passengers per vehicle 
  • Domestic Flights: ~120.4 passengers per flight 
  • Amtrak Trains: ~169.6 passengers per train 
  • Transit Bus: maximum capacity = 60 to 90 passengers 
  • Intercity Bus: ~43.7 passengers per trip 

Conclusions: 

When only considering the efficiency of the fuel used, automobiles seem like the more environmentally friendly option when traveling.  But when considering the substantially higher number of people who typically travel on a single train or airplane, automobiles (excluding hybrids) emit more greenhouse gases per mile than a train or airplane (see below for individual carbon footprints of each passenger). As the number of passengers increases to 3 or more, automobiles become a more sustainable choice.   

  1. Transit Trains (electric): 0.15 lbs CO2e per mile 
  2. Amtrak Trains (electric & diesel): 0.26 lbs CO2e per mile 
  3. Automobiles (hybrid): ~0.27 lbs CO2e per mile (based on the lower end of expected mileage for a 2024 Toyota Prius) 
  4. Domestic Flights (jet fuel): 0.39 lbs CO2e per mile 
  5. Automobiles (all fuel types): 0.48 lbs CO2e per mile 
  6. Transit Bus (diesel): 0.80 lbs CO2e per mile 
  7. Demand Response (includes Uber): 2.70 lbs CO2e per mile 

Green Tip 

When planning your next trip, try to use more sustainable forms of transportation based on the information above. Consider the number of passengers who will be traveling with you when you make your decision. 

Sources 

  1. United States Department of Energy (2022) 
  1. United States Department of Energy (2025) 
  1. Bureau of Transportation Statistics (2025) 
  1. United States Energy Information Administration (2024a) 
  1. United States Energy Information Administration (2024b) 
  1. Oak Ridge National Laboratory (2022). “Transportation Energy Data Book Edition 40.” 
  1. Amtrak FY 2024 Company Profile 

Mercy Volunteer Andrew Stoltzfus created a video on his Cincinnati community’s sustainability practices that include composting, properly recycling, conserving electricity and growing their own herbs. 

These are some of the ways in which the Institute of the Sisters of Mercy of the Americas will more fully live Laudato Si’ in 2025. To see the third year action plan click here.


Responding to the Cry of the Earth

The climate sustainability director will:

  • Estimate initial annual carbon emissions from utilities (e.g., electricity, gas, and water) and vehicle usage throughout the Institute;
  • Work with the solar installation company to implement agreed-upon solar and battery design for the Belmont, NC, solar array project; and 
  • Work with a contractor to stabilize the shoreline at Mercy by the Sea Spiritual Retreat and Conference Center to prevent future erosion from coastal storms and sea-level rise.

Responding to the Cry of the Poor

The Justice Team will deepen education and advocacy about the harms of extractivism to communities and the environment through: 

  • Engaging communities beyond the Sisters of Mercy in small groups using our Awakening to a New Consciousness on Extractivism resources;
  • Accompanying communities most harmed by extractivism, including through local extractivism immersion experiences; and 
  • Giving special attention to water injustices experienced by communities on the front lines of extractive industries, in partnership with Mercy Global Action’s water justice initiative. 
  • The Justice Team will organize immersion experiences at the U.S.-Mexico border to expand the number of sisters, associates, companions and co-workers who are educated about immigration policy and the reality at the border and connections between immigration and environmental and climate justice.  
  • Mercy Investment Services will expand and deepen the integration of environmental, social and governance investment strategies by:
    • Actively allocating capital to address diversity gaps amongst decision-makers and financial access within the Inclusive Opportunities Fund;  
    • Continuing expanding the emerging managers program supporting firms owned or products managed by people with diverse or underrepresented backgrounds; and  
    • Deepening Mercy Partnership Fund’s continued dedication to racial and gender equity as well as those that emphasize international opportunities.

Ecological Economics

Mercy Investment Services will:

  • Continue to ground our investment actions in seeking prophetic change in climate action and solutions;
  • Partner with other investors to engage corporations on water stewardship, greenhouse gas emissions, plastics use, biodiversity and other important issues; and  
  • Use our position as a faith-based investor to defend the rights of investors to choose investments that care for the Earth.

Sustainable Lifestyles

  • The Director of Climate and Sustainability will develop and update flyers to create awareness of and provide practical sustainable lifestyle tips related to meetings and events, office supplies and electronics, health and wellness, emergency management and sustainability on a tight budget. 
  • The Justice Team and Climate and Sustainability Director will continue the monthly Mercy Tips to Care for Earth

Ecological Education

  • Mercy Education System of the Americas plans to:
    • Revamp the environmental science course in its Mercy Learning Online program, specifically the water lesson, to incorporate resources from Mercy Global Action; 
    • Launch a monthly column in its weekly newsletter highlighting sustainability initiatives across Mercy schools;
    • Enhance sustainability efforts at meetings and events by being mindful of supplies ordered and encouraging participants to bring reusable water bottles; and 
    • Promote active participation in Laudato Si pilgrimages across the schools.
  • A Mercy associate in Guyana will socialize her guidebook and set of advocacy tools for communities to understand the risks of the growing oil and gas industry in her country, and that will become a template for similar education elsewhere.
  • The Climate and Sustainability Director will visit the sisters and staff to discuss concerns related to climate and sustainability as well as ongoing projects, and also serve as a resource for Mercy ministries and other religious congregations.
  • The Justice Team will invite Mercy high school, college and university students to submit short videos on reducing consumption to better care for earth and on the positive impact that women have in the world. The winning videos will be showcased on our website.
  •  The Justice Team will plan a blog series to highlight the ways in which sisters, associates, companions and co-workers are hearing the cry of Earth and the cry of people who are poor.

Ecological Spirituality

  • The Justice Team, along with partner Catholic organizations in the U.S., will promote and provide support to sisters, associates, companions and ministries organizing Laudato Si pilgrimages to celebrate the encyclical’s 10th anniversary. 
  • The Justice Team will promote Laudato Si Animator trainings to equip sisters, associates and co-workers to shift consciousness of their communities around environmental and climate justice. 

Community Participation and Empowerment

  • The Justice Team will engage in advocacy and education leading up to COP 30 in Brazil with partners from ecclesial networks (REPAM, REMAM and REGCHAG) and the Churches and Mining Network. 
  • The Justice Team will lead U.S. advocacy among congregations of women religious and interfaith partners to stem deforestation, address the harms of mining in the energy transition, and support environmental protections and climate policies.