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Study on Greenhouse Gas Emissions from Global Cities Highlights Importance of Geophysical and Technical Factors

Green Car Congress

The metabolism of a city can be interpreted either primarily in terms of energy flows or more broadly including a city’s flows of water, materials, and nutrients. Whereas Denver, having the highest per capita emissions for electricity, heating/industrial fuels, and ground transportation is, not surprisingly, the top emitter.

Emissions 199
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Commercial Space Stations Approach Launch Phase

Cars That Think

These included hitting targets for trace contaminant control, water contaminant oxidation, urine water recovery, and water tank tests—all of which are required to operate effectively and efficiently to enable finite resources to keep delicate human beings alive in orbit for long timeframes.

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Environmental Charter High School Gets Solar; Greenius Goes EcoMedia

Creative Greenius

The pump drives the closed loop aquaponics system that takes nutrients from fish in a large water tank and delivers them to growing plants in the greenhouse which then filters the water and sends it back to the tank. Aquaculture (fish farming) and hydroponics (growing plants in water) becomes aquaponics when combined.

Solar 150
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US DOT Awards $100M in Recovery Act Funds to 43 Transit Projects to Reduce Energy Consumption and Greenhouse Gas Emissions

Green Car Congress

Denver Regional Transportation District, Colorado: $770,000. Solar Thermal System: A solar thermal system on the building roof will provide hot water for the operations building and the maintenance building. Denver Regional Transportation District, Colorado: $325,000. Rock Island Metro, Illinois: $600,000.

Emissions 256
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Study finds vehicles more important source of urban atmospheric ammonia than farms

Green Car Congress

The researchers outfitted vehicles with sensors to detect ammonia levels and focused on six cities: Philadelphia, Denver and Houston in the United States, and Beijing, Shijiazhuang and Baoding in China. —Sun et al. The laser-based sensors were smaller, easier to work with and more accurate than previously used sensors, Zondlo said.

Vehicles 150
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This Rwandan Engineer is Learning How to Manage Humanitarian Projects

Cars That Think

The IEEE member from Kigali, Rwanda, participated in installing portable sinks in nearby rural markets to curb the spread of COVID-19 and provided clean water and sanitation services to people displaced by the Mount Nyiragongo volcano eruption in 2021. It teaches leadership and other soft skills.

Rwanda 98
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AI-Guided Robots Are Ready to Sort Your Recyclables

Cars That Think

Expanding its use will prevent waste and help the environment by keeping recyclables out of landfills and making them easier to reprocess and reuse. More hyperspectral sorters, in series, can pull off plastics one type—like the HDPE of detergent bottles and the PET of water bottles—at a time. AMP Robotics. That’s good for the planet.

Waste 145