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  • The Clever Architectural Feature That Makes Life on Bermuda Possible

    There is no natural freshwater source on Bermuda, so residents turn to rainfall as a way to fulfill their water needs. The white limestone Bermuda roofs are used to catch and redirect rain into underground tanks that serve as their primary source of freshwater. Droughts happen, which has led to other solutions, but the limestone roofs are still primarily their largest source of freshwater.

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  • The mechanical stomach powering homes by digesting old food scraps

    The electricity powering 3,000 Perth homes might have started out as moldy bread and rotting lettuce. The city of Cockburn collects food waste from supermarkets and restaurants to be fed into a mechanical "stomach" that converts the waste to energy. Methane is trapped and used to power electric generators. The remainder of the "digested" food is turned into compost and liquid fertilizer. The operation has recycled 43 tons so far, removing 81,000 kilograms of gases that otherwise would escape landfills and warm the atmosphere.

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  • In Denver, Tiny Homes Take On Affordable Housing

    Denver's Beloved Community Village is a development of 20 "tiny houses," affordable single-family homes that have helped residents obtain stable housing at rates that allow them to get ahead financially. Charlotte would have to change its zoning laws, and some residents' attitudes, to allow for such a hedge against homelessless. Those changes are possible, but will take time and much effort.

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  • What Went Into Building Europe's Largest Floating Solar Park

    Evides Waterbedrijf, a drinking water company, created Europe’s largest floating solar park. They installed almost 3,000 solar panels on an island in the middle of a reservoir that allows it to move with the sun to maximize its energy. This setup generates about 15 percent of the electricity the company uses at the site.

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  • Simple hand-built structures can help streams survive wildfires and drought

    Conservationists, government agencies, scientists, and landowners are working together to restore streams using low-cost solutions from sticks, stones, and even beavers. Restoring these floodplains is important to help communities combat drought and wildfires. In Idaho, scientists relocated nine beavers to Birch Creek so they could help repair the dried-up stream. In three years, the beavers built dams, which helped the creek flow for longer in the summer. This method might not work everywhere, so scientists have also tested stone structures, which also proved effective at improving the ecosystem.

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  • How satellite images are helping one country hand out cash

    "Poverty maps" that combine satellite imagery and survey data enabled the Togolese government to target emergency pandemic charitable aid to the people in greatest need. Togo officials relied on the expertise of University of California-Berkeley researchers whose system interprets aerial images showing such factors as the density and condition of housing. Initially, 35,000 people received $13-$15 per month for five months to make up for the loss of jobs and small-business income during pandemic shutdowns. Applications were sought from targeted areas through advertising, and money was sent via mobile phones.

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  • Michigan caregivers got a $2 hourly boost in COVID. Should it be permanent?

    The Michigan state legislature temporarily boosted the pay of direct caregivers working with seniors and people that have disabilities by $2 an hour in recognition of their essential and sometimes risky services during the coronavirus pandemic. With about half of direct caregivers living at or near poverty, the pay bump was temporarily renewed at the slightly higher rate of $2.25 an hour, but it is set to expire again in September 2021. The governor has proposed making permanent a pay raise of $2 an hour, which helps the caregivers meet their own basic needs a little better.

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  • ‘Our biggest challenge? Lack of imagination': the scientists turning the desert green

    A Dutch group of engineers known as the Weather Makers has an ambitious plan to regreen the Sinai Peninsula — the stretch of desert connecting Egypt to the rest of Asia. Their efforts would restore forests, wetlands, and even adjust the weather for the region. This form of ecosystems regeneration could help with food security and mitigate the effects of climate change. Their process of changing an entire ecosystem can be controversial, but initial tests have shown how this could work on a large scale.

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  • The human right that benefits nature

    A court in Costa Rica decided that a local municipality was illegally polluting a stream and this ruling set the stage for the country to ensure that a clean and healthy environment is a human right. They ingrained this right in their constitution joining about 110 other countries that have constitutionally recognized it. Although the law is not perfect, it has allowed courts to rule that killing endangered green sea turtles is unconstitutional, for example. Costa Rica’s success with this legal pathway could be used in other countries seeking to adopt the right to a healthy environment.

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  • Using satellite photos to help distribute cash

    Togo distributed money to people in need, including informal sector workers, by identifying them using machine learning. Algorithms search satellite photos for clues of poverty, using measures like building density, and individuals within those areas are found using mobile phone data as a proxy of their wealth. Media campaigns also encourage people to apply for assistance. Once eligibility is confirmed, the first of five monthly payments is instantly sent to their phone and can be collected at local pick-up points. People without mobile phones can use an inexpensive SIM card in a borrowed phone.

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