By Tracy Matsue Loeffelholz
Sometime during the spring, backyard food growers decide what kind of tomatoes to grow: heirlooms or hybrids. Hybrid varieties have had the benefit of genetic tinkering that allows for some cool traits. But these seeds must be purchased new each year from the companies that create them.
Heirloom varieties have long, stable genetic histories, and these seeds usually have been passed down for generations within communities. Heirloom vegetables are irresistible, not just for the poetry in the names, but because these titles stand for real stories. Vegetables acquire histories when they are saved as seeds for many generations, carefully maintained and passed by hand from one gardener to another, wrote author-turned-farmer Barbara Kingsolver in her memoir, Animal, Vegetable, Miracle (2007).
Most tomatoes in a supermarket are hybrids, bred for uniform shape, mechanized harvest and long journeys. A study by the U.S. Department of Agriculture found that between 1903 and 1983, the variety of produce being grown had shrunk by 93 percent—408 varieties of tomatoes down to 79—and many of those heirlooms have been lost entirely. Like sunshine, heirloom seeds are of little interest to capitalism if they can't be patented or owned, Kingsolver wrote.
That has spurred backyard farmers and networks like Seed Savers Exchange to preserve what's left. If you're traveling to out-of-the-way farmers' markets or find yourself dining on beautiful heirloom tomato varieties that you find particularly delicious, save a tomato slice to take home. Then save the seeds to grow your own. Here's how:
1. Save a big tomato slice to take home.
2. Dig around to extract the seeds, surrounding pulpy gel, and juice, and put in a non-metal cup or jar.
3. Allow it to sit for two days at room temperature. Don't be alarmed by a little mold. The fermentation kills viruses, sorts out dud seeds and separates seeds from their gel coating. Add water, stir, and wait for the mixture to settle. In general, the healthy seeds will sink to the bottom.
4. Pour off the goop, liquid and any floating seeds, then rinse the good seeds in a strainer.
5. Arrange the biggest, fattest seeds on a paper towel, and allow them to dry for a couple of weeks. When it's time to plant, just pinch off pieces of paper towel. Don't forget to check the Seed Saver's Exchange to see if your variety is in its seed bank. If not, let them know what you've got.
Reposted with permission from our media associate YES! Magazine.
A "trash tsunami" has washed ashore on the beaches of Honduras, endangering both wildlife and the local economy.
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More long-finned pilot whales were found stranded today on beaches in Tasmania, Australia. About 500 whales have become stranded, including at least 380 that have died, the AP reported. It is the largest mass stranding in Australia's recorded history.
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By Harry Kretchmer
By 2030, almost a third of all the energy consumed in the European Union must come from renewable sources, according to binding targets agreed in 2018. Sweden is helping lead the way.
Sweden is a world leader in renewable energy consumption. Swedish Institute/World Bank
Naturally Warm<p>54% of Sweden's power comes from renewables, and is helped by its geography. With plenty of moving water and 63% forest cover, it's no surprise the <a href="https://sweden.se/nature/energy-use-in-sweden/#" target="_blank">two largest renewable power sources</a> are hydropower and biomass. And that biomass is helping support a local energy boom.</p><p>Heating is a key use of energy in a cold country like Sweden. In recent decades, as fuel oil taxes have increased, the country's power companies have turned to renewables, like biomass, to fuel local 'district heating' plants.</p><p>In Sweden these trace their <a href="https://www.sciencedirect.com/science/article/pii/S0360544217304140#fig3" target="_blank">origins back to 1948</a>, when a power station's excess heat was first used to heat nearby buildings: steam is <a href="https://www.sciencedirect.com/topics/engineering/district-heating-system" target="_blank">forced along a network of pipes</a> to wherever it's needed. Today, there are around 500 district heating systems across the country, from major cities to small villages, providing heat to homes and businesses.</p><p>District heating used to be fueled mainly from the <a href="https://www.sciencedirect.com/science/article/pii/S0360544217304140" target="_blank">by-products of power plants</a>, waste-to-energy plants and industrial processes. These days, however, Sweden is bringing more renewable sources into the mix. And as a result of competition, this localized form of power is now the country's<a href="https://www.sciencedirect.com/science/article/pii/S0360544217304140#fig3" target="_blank" rel="noopener noreferrer"> home-heating market leader.</a></p>
Sweden is using smart grids to turn buildings into energy producers. Huang et al/Elsevier
Energy ‘Prosumers’<p>But Sweden doesn't stop at village-level heating solutions. Its new breed of energy-generation takes hyper-local to the next level.</p><p>One example is in the city of Ludivika where 1970s flats <a href="https://www.buildup.eu/sites/default/files/content/transforming-a-residential-building-cluster-into-electricity-prosumers-in-sweden.pdf" target="_blank">have recently been retrofitted with the latest smart energy technology</a>.</p><p>48 family apartments spread across 3 buildings have been given photovoltaic solar panels, thermal energy storage and heat pump systems. A micro energy grid connects it all, and helps charge electric cars overnight.</p><p>The result is a cluster of 'prosumer' buildings, producing rather than consuming enough power for 77% of residents' needs. With <a href="http://www.diva-portal.org/smash/get/diva2:1232060/FULLTEXT01.pdf" target="_blank" rel="noopener noreferrer">high levels of smart meter usage</a>, it's a model that looks set to spread across Sweden.</p>
<div id="d7bf9" class="rm-shortcode" data-rm-shortcode-id="8757b138d5570bec9d6aad18074a429a"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1273556364263071744" data-partner="rebelmouse"><div style="margin:1em 0">Read more about Western Harbour and book a visit: https://t.co/ujSmVs9rNK 🏡🌳🌊 https://t.co/C5PuPziqIM</div> — Smart City Sweden (@Smart City Sweden)<a href="https://twitter.com/SmartCitySweden/statuses/1273556364263071744">1592474473.0</a></blockquote></div>
Scaling Up<p>A recent development by E.ON in Hyllie, a district on the outskirts of Malmö, southern Sweden, <a href="https://www.eonenergy.com/blog/2019/February/sweden-smart-city" target="_blank">has scaled up the smart grid principle</a>. Energy generation comes from local wind, solar, biomass and waste sources.</p><p>Smart grids then balance the power, react to the weather, deploying extra power when it's colder or putting excess into battery storage when it's warm. The system is not only more efficient, but bills have fallen.</p><p>Smart energy developments like those in Hyllie, Ludivika, and renewable-driven district heating, offer a radical alternative to the centralized energy systems many countries rely on today.</p><p>The EU's leaders have a challenge: how to generate 32% of energy from renewables by 2030. Sweden offers a vision of how technology and local solutions can turn a goal into a reality.</p>
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By Jessica Corbett
In another win for climate campaigners, leaders of 12 major cities around the world — collectively home to about 36 million people — committed Tuesday to divesting from fossil fuel companies and investing in a green, just recovery from the ongoing coronavirus pandemic.
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