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Archive for the ‘sustainability’ category: Page 480

Aug 29, 2018

ESA Business Applications

Posted by in categories: business, economics, sustainability

In 1999 the United Nations acknowledged that the development gap between rich and poor countries was widening: about three-fifths of the world’s population lacked access to basic sanitation and one-third did not have access to safe drinking water. In spite of many initiatives and efforts, the sanitation issue is still largely unresolved; it is estimated that 2.3 billion people — primarily in Asia, sub-Saharan Africa, and Latin America and the Caribbean — still lack access to basic sanitation (toilet). To address this challenge, in 2015, the global community adopted a Sustainable Development Goal dedicated to clean water and sanitation (SDG 6). Target 6.2 under this Goal calls for, “by 2030, achieving access to adequate and equitable sanitation and hygiene for all and ending open defecation.”

ESA business applications in cooperation with Toilet Board Coalition (http://www.toiletboard.org/) will be launching a new Invitation to Tender in Q3 2018 to assess the technical feasibility and viability of space-based services in support of sanitation for developing economies, and will establish the roadmap for service implementation through potential follow-on demonstration projects.

Toilet Board Coalition is a business-led partnership addressing the global sanitation crisis by accelerating the Sanitation Economy; it brings a network of business partners and sanitation development stakeholders, as well as experts from the global sanitation community. The Toilet Board Coalition will provide specific use cases and requirements derived from its two funded pilot projects, each assessing scalability of the Sanitation Economy.

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Aug 28, 2018

Tesla Model X will carry first astronauts flying in SpaceX’s Dragon spacecraft to launch pad

Posted by in categories: Elon Musk, space travel, sustainability

SpaceX is preparing to make its first demo launches for NASA’s commercial crew mission program, which aims to bring back the capability for U.S. spacecraft to fly astronauts to space.

The rocket company plans to use Tesla Model X vehicles to bring the first astronauts flying in the Crew Dragon spacecraft to the launch pad.

It appears to be the latest example of some synergy between Elon Musk’s two main companies.

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Aug 28, 2018

How Google Earth led a team of scientists to discover an untouched mountaintop rainforest

Posted by in categories: drones, food, sustainability

In 2018, what is left to explore in the world? It seems unlikely, say, that humans might find an untouched forest to study, someplace that hasn’t been bulldozed and burnt and exploited within an inch of its life for precious minerals or virgin timber. But that’s exactly what happened this past spring, when a Welsh researcher, Dr. Julian Bayliss, led a 28-person team that included scientists specially selected for their different talents as well as logistics experts, rock climbers, and filmmakers to the top of a mountain in Mozambique.

The story of the Mount Lico expedition began six years ago when Bayliss, a conservation scientist and butterfly expert, happened to spy a small forest atop a mountain using Google Earth. It wasn’t the first time he’d found such a place; Bayliss had been using Google Earth to explore high-altitude rainforests in Africa for around 15 years. In February 2017, the time was finally right: Bayliss brought a drone to the base of the 410-foot sheer rock protuberance (technically known as an inselberg) to confirm that there was a forest on top. This was no small feat. The area surrounding Mount Lico is a patchwork of smallholder farms, tea and eucalyptus plantations, and woodlands. There are no paved roads, no hotels — just rivers to cross, plants to hack away with machetes, and miles of dirt track to navigate.

While locals were aware of Mount Lico and used the natural resources of surrounding forests, its tall, sheer walls meant that it was nearly impossible to access, which made it likely that the land on top was untouched by humans. However, scientists would later find out that someone had been up there at least once.

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Aug 27, 2018

Tesla’s Semi truck is traveling cross-country ‘alone’

Posted by in categories: Elon Musk, sustainability, transportation

Tesla’s Semi truck has already made some city-to-city trips, but how does it fare on cross-country jaunts — you know, what it’ll be doing when it enters service? Just fine, if you ask Elon Musk. In response to an Electrek piece on the Semi’s latest visit (to Arkansas trucking behemoth J.B. Hunt), the CEO noted that the Semi has been traveling thousands of miles entirely by itself, using the existing Supercharger network. The only necessary help is an “extension cord” to help the truck plug in. To be exact, it’s a system of cords that plugs into multiple stations at once to top up the Semi’s giant battery before the company’s Megachargers come online.

That solo travel is likely meant in part to reassure customers (including J.B. Hunt) that the Semi is already capable of handling long-distance trips without escorts. However, it does leave a few open questions. How long does it take to top up using Superchargers, and how likely is it that drivers could rely on them when Megachargers aren’t available? While it’s easy for a Tesla-operated truck to cross the US using the existing framework, it’d be another matter with thousands of third-party trucks in service. This is a significant step toward the Semi hitting the road in earnest, but there are many more steps to go.

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Aug 25, 2018

Solar-powered quadcopter drone takes flight

Posted by in categories: drones, engineering, solar power, sustainability

A university in Singapore has conducted one of the first practical flights of a solar-powered quadcopter drone.

The prototype has flown as high as 10 meters (about 33 feet) in test flights using solar power with no battery or other energy storage on board, according to the National University of Singapore (NUS), which announced that an engineering team had conducted the test flight.

“Rotary winged aircraft are significantly less efficient at generating lift compared to their fixed wing counterparts [so] a viable 100 per cent solar rotary aircraft that can take-off and land vertically remains a major engineering challenge to date,” the university said in a statement.

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Aug 24, 2018

As Japan’s farmers age, drones help with heavy lifting

Posted by in categories: drones, food, life extension, sustainability

Rural communities in Japan are facing a labor shortage as farmers age and young people move to urban areas. The drones, which fly over fields quickly performing tasks strenuous to farmers, may be one part of how farms in the aging rural heartland can adapt.

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Aug 24, 2018

Scientists deliver a longer-lasting lithium-oxygen battery

Posted by in categories: mobile phones, sustainability, transportation

Packing more energy into batteries is the key to delivering electric cars with longer range, smartphones that can last days—and cheaper electronic products all around.

The promise: Lithium-oxygen batteries represent one of the more promising paths toward that end. They could boost energy density by an order of magnitude above conventional lithium-ion batteries—in theory, at least. In a paper published today in Science, researchers at the University of Waterloo identified ways of addressing some of the major hurdles to converting that potential into commercial reality.

The challenge: A critical problem has been that as a lithium-oxygen battery discharges, oxygen is converted into superoxide and then lithium peroxide, reactive compounds that corrode the battery’s components over time. That, in turn, limits its recharging ability—and any real-world utility.

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Aug 22, 2018

‘Trash is gold’ as Benin community turns waste into biogas

Posted by in category: sustainability

Garbage has never smelled so sweet for a small village in southern Benin since it opened a pilot waste treatment centre to turn household rubbish into gas—and cash.

“Our trash has become gold. We no longer throw it into the bush. We use it to make money,” beams Alphonse Ago, who lives next to the centre in Houegbo village.

ReBin, a Swiss foundation for sustainable development, built the 1.3-hectare (3.2-acre) facility, which every week turns around six tonnes of into 200 cubic metres of biogas—saving some 164 tonnes of wood from being used to make charcoal.

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Aug 21, 2018

Supersized solar farms are sprouting around the world (and maybe in space, too)

Posted by in categories: solar power, space, sustainability

In a quest to cut the cost of clean electricity, power utilities around the world are supersizing their solar farms.

Nowhere is that more apparent than in southern Egypt, where what will be the world’s largest solar farm — a vast collection of more than 5 million photovoltaic panels — is now taking shape. When it’s completed next year, the $4 billion Benban solar park near Aswan will cover an area 10 times bigger than New York’s Central Park and generate up to 1.8 gigawatts of electricity.

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Aug 21, 2018

Ecosystems are getting greener in the Arctic

Posted by in categories: climatology, sustainability

In recent decades, scientists have noted a surge in Arctic plant growth as a symptom of climate change. But without observations showing exactly when and where vegetation has bloomed as the world’s coldest areas warm, it’s difficult to predict how vegetation will respond to future warming. Now, researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and UC Berkeley have developed a new approach that may paint a more accurate picture of Arctic vegetation and our climate’s recent past – and future.

In a study published online Aug. 20 in Nature Climate Change, the researchers used satellite images taken over the past 30 years to track – down to a pixel representing approximately 25 square miles – the ebb and flow of in cold areas of the northern hemisphere, such as Alaska, the Arctic region of Canada, and the Tibetan Plateau.

The 30-year historic satellite data used in the study were collected by the National Oceanic and Atmospheric Administration’s Advanced Very High Resolution Radiometer. The data was processed by Boston University, and is hosted on NEX – the NASA Earth Exchange data archive.

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