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Report: The GMC Hummer EV Isn't That Great for the Environment

The Truth About Cars

Big shocker here: Inefficiency is inefficiency, and it doesn’t matter if it comes from a gas or electric powertrain. Big, heavy EVs have proven to be just as wasteful as many of their internal combustion engine counterparts, though they aren’t producing any tailpipe emissions in the process.

Hummer 105
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Study finds high-density, low-rise cities such as Paris may be optimal urban form for reducing life cycle GHG emissions

Green Car Congress

A study by researchers at CU Boulder and Edinburgh Napier University finds that high-density, low-rise environments such as those found in Paris are the optimal urban form when looking to reduce greenhouse gas emissions over their whole life cycle. There is a growing belief that building taller and denser is better. Pomponi et al.

Emissions 476
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bp begins shipping LNG from Mozambique’s first LNG project and first FLNG platform

Green Car Congress

bp has successfully loaded the first LNG cargo from Mozambique’s offshore Coral Sul FLNG (floating liquefied natural gas) facility, the country’s first LNG project and first floating LNG facility deployed in the ultra-deep waters of the African continent. FLNG vessels are floating LNG production, storage and offloading units.

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BMW provides an update on waste heat recovery projects; Turbosteamer and the Thermoelectric Generator

Green Car Congress

The company says that some of the most promising projects are the Turbosteamer ( earlier post ); the Thermoelectric generator (TEG) ( earlier post ); engine encapsulation; and a waste heat exchanger for oil heating. Research project Turbosteamer: comparison of the heat exchanger generation 1 (top) and generation 2 (bottom).

Waste 376
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Comprehensive LCA report from Ricardo on behalf of EC confirms environmental benefits of electrified powertrains

Green Car Congress

In addition to greenhouse gas emissions, the report also assesses a number of other environmental impact categories, ranging from resource use, including cumulative energy consumption, mineral and metal resource depletion and water scarcity, to airborne pollutant emissions (like particulates and nitrogen oxides), and human- and eco-toxicity.

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Lifecycle Study Finds Algae as Bioenergy Feedstock Has Higher Environmental Impacts than Conventional Crops in Energy Use, GHG Emissions, and Water Use; The Importance of Using Waste Streams

Green Car Congress

Terrestrial bioenergy feedstock crops such as switchgrass, canola and corn have lower environmental lifecycle impacts than algae in energy use, greenhouse gas emissions, and water regardless of cultivation location, according to a new lifecycle assessment by researchers at the University of Virginia. Credit: ACS, Clarens et al. Clarens et al.

Water 218
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The Case for Nuclear Cargo Ships

Cars That Think

Nearly all of the world’s ship fleet still runs on diesel fuel, with about a quarter of new ships on order being built to run on somewhat lower-carbon alternatives like liquefied natural gas, methanol, or hybrid propulsion. Shipping uses over 300 million tonnes of fossil fuels every year, producing 3 percent of greenhouse gas emissions.