Author: Camellia Moors ’22

Welcome to another edition of Good News Friday! Today, we’re covering the growth of wind power in the United States, a breakthrough in solar cell efficiency, and sustainability programs from cities around the world.

1. Wind power becomes second-largest source of US electricity: According to the Energy Information Administration (EIA), electricity generation through wind power exceeded generation from coal- and nuclear-based sources to become the second-largest source of electricity nationally for the first time in American history on March 29. On that day, the combined wind turbines of the Lower 48 produced just over 2,000-gigawatt hours of electricity or 19% of the national energy mix. This follows a strong trend of growth in wind energy throughout the country. In the year 2000, for example, total annual US wind energy generation was approximately 6 billion kilowatt-hours (kWh); by 2021, that number increased to 380 billion kWh.

2. Engineers create more efficient energy-producing cells: Engineers at MIT and the National Renewable Energy Laboratory recently designed a thermophotovoltaic (i.e., capable of directly converting heat to electricity) cell with an efficiency of over 40%, which exceeds the efficiency of traditional steam turbines. The new design can generate electricity from a heat source ranging between 1,900 and 2,400 degrees C. For context, most commercial photovoltaic panels (i.e., capable of converting sunlight to electricity) have an average efficiency of 15% to 20%.

3. A review of global cities’ sustainability programs: Around the world, cities have made their own commitments to sustainability goals. Copenhagen, Denmark is on track to achieve net-zero by 2025, 25 years before the country’s national net-zero target. Mumbai, India recently accelerated its own net-zero plans, moving its carbon neutrality target up by 20 years from 2070 to 2050. And Paris, France is engaging in experiments about a “15 minute city,” or the idea that everyone living within a city should have access to essential urban services within a 15-minute walk or bike, limiting transportation emissions. For extra details on these cities’ sustainability efforts, visit the original article here.

That’s all for this week! Check back next week for more positive environmental news. In the meantime, if you’d like to share some Good News with us, please feel free to get in touch!

Author: Camellia Moors ’22

Welcome to another edition of Good News Friday! Today, we’re covering Apple’s use of low-carbon aluminum, the development of a solar cell capable of generating electricity at night, and the creation of a new project to better understand thawing permafrost and help Arctic communities.

1. Apple sources low-carbon aluminum: Apple recently announced that it intends to use the “first commercial-purity primary aluminum at industrial scale,” produced through “the world’s first direct carbon-free aluminum smelting process,” in its iPhone SE products. This new aluminum is produced by ELYSIS, a joint venture by Apple, Rio Tinto, Alcoa, and the governments of Québec and Canada. While this might not sound immediately revolutionary, aluminum production is well-known as an extremely carbon-intensive process, with 11.5 tons of CO2 per ton of aluminum produced emitted on average. As a result, this innovation in the smelting process could have a significant impact on global emissions, not least because Apple is expected to sell 30 million iPhone SEs this year.

2. Engineers develop nighttime solar panels: Engineers at Stanford University have developed a solar cell that can generate some electricity at night. The cell, which “incorporates a thermoelectric generator, which can pull electricity from the small difference in temperature between the ambient air and the solar cell itself,” produces enough electricity to power some nighttime lighting and off- and/or mini-grid applications.

3. Major permafrost study to be launched: This week, a coalition of scientists, policy experts, and advocates announced a 6-year, $41 million project to “fill in gaps in monitoring across the Arctic of greenhouse gas emissions from thawing permafrost, currently a source of uncertainty in climate models,” and to “develop policies to help mitigate the global impact of permafrost emissions and, locally in Alaska, assist Native communities that are struggling with thawing ground and problems that arise from it.” The Arctic Institute, for example, predicts that an increase in global temperatures of 3° C (5.4° F) could melt 30-85% of the Arctic’s top permafrost layers.

That’s all for this week! Check back next week for more positive environmental news. In the meantime, if you’d like to share some Good News with us, please feel free to get in touch!

Author: Camellia Moors ’22

Welcome to another edition of Good News Friday! Today, we’re covering

1. China completes first “Vertical Forest City”: In Huanggang, China, the city’s first Vertical Forest City Complex has recently been completed. Essentially a vertical greenspace, the approximately 500-person residential complex features balconies and plant installments containing over 5,000 shrubs and trees. This building joins a growing trend in urban planning of incorporating green spaces into building projects, which are touted as reducing energy consumption and removing carbon dioxide from the air. Like many other vertical forest projects around the world, Huanggang’s example is the product of architect Stefano Boeri’s designs. (For other examples of his work, see his website).

2. UK grocery stores aim for refillable groceries: Five grocery stores and suppliers in the UK (Waitrose, Ocado, Morrisons, Marks & Spencer, and CHEP) have joined the Refill Coalition (run by Unpackaged) and pledged to “roll out unpackaged options in-store as well as letting people fill containers with essentials during home deliveries” by the end of this year. This comes as the UK Government last year announced plans to phase out single-use plastics (it is estimated the UK uses 2.5 million metric tons of single-use plastic packaging annually).

3. World leaders to develop plastic treaty: At an UN environment assembly in Nairobi, Kenya late last month, representatives from 173 countries agreed to develop treaty on plastics to be developed over the next two years. The ultimate goal of the treaty will be to eliminate plastic pollution. Approximately 300 million metric tons of plastic waste are produced each year, and of all 7 billion metric tons of plastic waste produced to date, only 10% has been recycled.

That’s all for this week! Check back next week for more positive environmental news. In the meantime, if you’d like to share some Good News with us, please feel free to get in touch!