gnat + energy   124

Why We Can't Solve Big Problems | MIT Technology Review
The answer is that these things are complex, and that there is no one simple explanation.
energy  future  technology 
november 2012 by gnat
Modern cargo ships slow to the speed of the sailing clippers | Environment | The Observer
A combination of the recession and growing awareness in the shipping industry about climate change emissions encouraged many ship owners to adopt "slow steaming" to save fuel two years ago. This lowered speeds from the standard 25 knots to 20 knots, but many major companies have now taken this a stage further by adopting "super-slow steaming" at speeds of 12 knots (about 14mph).

Travel times between the US and China, or between Australia and Europe, are now comparable to those of the great age of sail in the 19th century. American clippers reached 14 to 17 knots in the 1850s, with the fastest recording speeds of 22 knots or more.

Maersk, the world's largest shipping line, with more than 600 ships, has adapted its giant marine diesel engines to travel at super-slow speeds without suffering damage. This reduces fuel consumption and greenhouse gas emissions by 30%. It is believed that the company has saved more than £65m on fuel since it began its go-slow.
energy  oceans  environment  economics 
november 2012 by gnat
World-first solar power project lights up Tokelau :: Idealog :: the magazine and website of New Zealand creative business, ideas and innovation
The energy crisis in Tokelau is over. This week the island was freed of its dependency on fossil fuels as Mount Maunganui company PowerSmart completed a world-first solar renewable energy project, officially making Tokelau 100 percent solar powered.
october 2012 by gnat
Atop TV Sets, Cable Boxes and DVRs Drain Power -
Those little boxes that usher cable signals and digital recording capacity into televisions have become the single largest electricity drain in many American homes, with some typical home entertainment configurations eating more power than a new refrigerator and even some central air-conditioning systems.
june 2011 by gnat
Debut of the first practical 'artificial leaf'
MIT scientists create first cheap, practical artificial leaf to crack water for fuel cells
ftw  energy  from twitter_favs
march 2011 by gnat
Why the Smart Grid Won’t Have the Innovations of the Internet Any Time Soon
smart meter data that is pushed to Google’s PowerMeter energy tool has to make its way back to the utility before it can be sent to Google. That means that even for Google’s energy tool, there can be both a significant delay before information reaches consumers, and significant gaps in energy data details. These delays and gaps can undercut the premise of how smart meter technologies will empower consumers to make decisions about their energy use based on real-time costs.
energy  grid 
june 2009 by gnat
Smart Grids Give Utility Customers Bargaining Power -
greatest challenge to the smart grid is the cost of replacement meters
energy  internet  web  ubicomp 
may 2009 by gnat
Jason Winters' Pico-Projects: Real-time Web Based Power Charting
"a live chart in a web page that updates every 10 seconds with the instantaneous power usage for my entire house"
energy  hardware  sensor  make  power 
january 2009 by gnat
A green New Deal? | Green, easy and wrong | The Economist
This article commends financial penalties for pollution but not financial incentives for clean energy ("subsidies"). "Subsidising clean energy requires politicians to decide the best way of delivering clean energy, and their judgement is likely to be worse than the market's". Can a government subsidise clean energy across the board, without preempting the market by preferring one over another? I'd say so.
energy  environment  economics  usa 
november 2008 by gnat
The Dominion Post: local, national & world news from Wellington's daily newspaper
80% of kiwis travel by private car, only 4% by bus. "The report calls for a fundamental shift in the Government's transport solutions - away from building more roads toward investing in alternative transport and maintaining existing roads."
transportation  energy 
august 2008 by gnat
MIT engineers work toward cell-sized batteries - MIT News Office
They lay down tiny posts, and viruses "preferentially self-assemble atop the polymer layers on the posts, ultimately forming the anode". The scientists "altered the virus's genes so it makes protein coats that collect molecules of cobalt oxide to form ultrathin wires -- together, the anode."
bio  science  energy 
august 2008 by gnat
Greentech Media: Green Light » Blog Archive » Green Light Interview: Fred Wang, Trinity Ventures
"To Trinity Ventures, green technology largely revolves around networking. Rather than place investments on biofuels or solar panels, the firm is largely focusing its green efforts on companies that hope to cut power and water consumption with IT technologies, according to Fred Wang, general partner. (ed note: It’s a strategy that’s similar to one that’s led to pretty good results for Foundation Capital.)"
energy  network  tech  future 
august 2008 by gnat
Just Left: Guest Post: "Passing Gas"
apparently NZ does have an acceptable supply margin. "But it looks like it’s taken another dip at the end, right? That’s because National has fudged the graphs. They’ve cut off the graph at its lowest point and deleted all relevant information from 2007-11. Busted!"
viz  energy  nz 
august 2008 by gnat
Car engines | The old motor roars back |
article discusses new internal combustion engine technologies and ends with this gem "when you count the overall costs of owning a car, only one hybrid in America, the Honda Civic Hybrid, gets into the top ten of the least expensive vehicles to run, with fuel prices at $5 a gallon" reminding us how far hybrids have to go to actually be greener than a petrol-driven car
transportation  energy 
august 2008 by gnat | Ideas | The end of travel
pundits, damn 'em. who's going to come back in two years' time and check whether they were full of shit?
travel  energy 
august 2008 by gnat
Prototype - Finding and Fixing a Home’s Power Hogs -
smart power meters the killer app for zigbee. "Governments would have to take steps like developing rate structures that reward efficiency, not power production, and eliminating write-offs for energy use"
energy  home  management  ubicomp 
july 2008 by gnat
US Department of Energy Joint Genome Institute announces new genome sequencing projects
plenty of projects sequencing organisms that break down plant fibre (cellulose, lignin, cell walls, etc.).
genomics  energy 
july 2008 by gnat
WorldChanging: Global Warming Twenty Years Later: Tipping Points Near
call to arms from the scientist who first raised the alarm about global warming
energy  environment 
june 2008 by gnat
Green Power Execs Start to Swagger | Beyond the Beyond from
great rant by Sterling, but "BP data suggest the world has proven oil reserves of 1.2 trillion barrels, enough to sustain current output for 40 years". My kids will outlive ubiquitous oil.
energy  business 
may 2008 by gnat
Homegrown people planet profit
Fascinating look at projects at Nokia relating to energy, recycling, repair. Lots of amazing facts (16 phones/second made by Nokia).
mobile  energy  environment 
may 2008 by gnat
Microsoft and Cisco eye Iceland for green server farms | The Register
Both Cisco and Microsoft will investigate the possibility of establishing server farms in Iceland powered fully by renewable energy.
energy  green  microsoft 
may 2008 by gnat
The Rebound Effect nicely illustrated :: Architectures of Control | Design with Intent
"if new devices are more energy efficient, will users simply use them more, or leave them on for longer?"
energy  psychology 
may 2008 by gnat
Crooked Timber » » The sustainability of improving living standards
Interesting substantial essay on the relationships between energy, information, living standards, and the environment.
energy  environment  economics 
may 2008 by gnat
Shell’s Scenario Planning « Jon Taplin’s Blog
"scramble" vs "blueprints". Seems simplistic but there are a lot of numbers here.
energy  numbers  future  shell 
april 2008 by gnat
cityofsound: The Personal Well-Tempered Environment
"Essentially, the idea is for a system that makes previously invisible aspects of people's behaviour visible, in order to help change individual and collective behaviour. In this case, the primary drive is towards leading a more sustainable personal life"
ubicomp  urban  society  energy  design 
april 2008 by gnat
Case history | In search of the perfect battery |
history of battery technology. Highlight for me: name of UTexas researcher inventing new battery material: Dr Goodenough. (bet he pronounces it "good-uh-no")
energy  research 
march 2008 by gnat
Rational consumer | Power plays |
Nissan say fuel efficiency gauges lower consumption by 10%. Home power monitoring systems: Owl, Wattson, smart meters.
energy  psychology 
march 2008 by gnat
NCSU Researchers Aim to Bring Sweetness to Biofuels ::
"Sweet potatoes, a staple on holiday dinner tables, are being re-engineered by North Carolina State University scientists as source of ethanol to help the U.S. reduce its dependence on imported oil – and ease the biofuel industry’s troublesome relianc
energy  food 
february 2008 by gnat
History of the potato | Wonder-food |
"Potatoes can produce more energy per unit area per day than any other crop"
energy  environment  food 
february 2008 by gnat
Sea gliders | Run silent, run green |
Use fins combined with rising and falling to move around. Named "Slocums" and the first is "The Spray", after Joshua Slocum's boat. If you haven't read up on Joshua Slocum (and read his book!) do so. Amazing stuff.
energy  hardware 
february 2008 by gnat
Tech.view | Sunny side down |
he first solar cells—built more than a century ago—had conversion efficiencies of around 1%. Since then, their efficiency has doubled once only every 30 years—a veritable snail’s pace compared with the speed of microchip development.
energy  solar  numbers 
february 2008 by gnat
Self-generated energy | Power from the people |
self-powered medical equipment from Freeplay, Dr Donelan from Simeon Fraser University generating electricity from decelerating phase of walking (steps).
energy  hardware 
february 2008 by gnat
Grand Challenges for Engineering
National Academy of Engineering's grand chall
science  research  future  bio  education  energy  environment  ui 
february 2008 by gnat
Irrational incandescence |
Cost of cutting carbon in diffferent ways: insulation, lighting, fuel efficiency, water heating all have -ve costs (i.e., pay for themselves). Wind, forestry, solar, killing coal all have +ve costs. "testament to economic irrationality"
energy  economics 
october 2007 by gnat
Shipping pollution 'far more damaging than flying' - Independent Online Edition > Climate Change
shipping not regulated, 90k vessels, 90% of global trade and commerce, 4.5% annual growth, producing greenhouse gases 2x aviation industry, 1B tonnes of "pollution" (GH gases?), pollutants from ships contribute half of LA's smog-related SO2
environment  pollution  energy  transportation 
october 2007 by gnat
Language Matters: One Decade into a New Era
ten years ago oil was at its lowest price and articles proclaimed $5/barrel oil was on the way
energy  history 
october 2007 by gnat
$100 Oil? We Love It -
coal to gas startup that vinod khosla's invested in
october 2007 by gnat
Green.view | The great submarine burp |
Methane at the sea floor comes wrapped in water molecules. Huge dangers--methane is a massively greenhouse gas, implicated in mass extinctions 220M and 55M years ago. Also messing with the reserves can cause undersea landslides and tsunamis. Joy!
energy  environment 
august 2007 by gnat
Electricity in Africa | The dark continent |
500M sub-saharan Africans are without modern energy, hydro irregular but increasingly tapped, Aggreko (Scottish backup generator co) supplies 50% of Uganda's power, West Af. pipeline planned to burn flareoff gases, jatropha plant as biofuel
africa  energy 
august 2007 by gnat
America's creaking infrastructure | A bridge too far gone |
price of structural concrete gone up 73% in last two years, 1995-2005 saw # miles driven increase 23% but length of roads 2%, CA "motorists now pay about one-third as much in petrol taxes, in real terms, to drive a mile as they did in the early 1960s"
transportation  energy 
august 2007 by gnat
The Pillars of the Next Real Revolution
"End of Oil Age; End of Hospitable Climate; End of Population Boom; Narrow Circulation of Money; Suddenly Endangered Superpower; Scary Becoming Powerful; Rise of Hard-Core Fundamentalism; Increasingly Toxic Planet." I'd link China's rise to US's decline.
future  trends  environment  energy  china  usa  religion 
august 2007 by gnat
News - Renewable energy at what cost?
Watts per square meter as measurement of effectiveness. biomass, hydro, wind all fuck up the land.
energy  environment  politics  science 
august 2007 by gnat
Petrol | Hands to the pump |
stupid infographic, but interesting data. cost of filling up a 50L Honda Civic tank around the world. Highest in Turkey ($93), least in Turkmenistan ($1 (!!!))
energy  numbers 
july 2007 by gnat
Oil | An unwelcome rise |
"America's refinery capacity inadequate for years, getting more capacity from existing plants rather than build new ones ... America alone accounts for roughly a quarter of world's oil consumption"
energy  usa 
july 2007 by gnat
Energy for China |
6% energy use growth predict. Natural gas deposits behind China's territory disputes in E China Sea. Much waste in cement and steel industries. Political stability depends on continued growth. Many price subsidies. Net importer of coal. Wnts 2 buy oil cos
energy  china  economics 
july 2007 by gnat
Tech.view | Perpetual nonsense |
Many would-be builders of perpetual-motion machines see scientific laws, like the conservation of energy, as mere dogma waiting to be overthrown by radical freethinkers. But science had its reformation centuries ago.
science  energy 
july 2007 by gnat
Fuel for Thought: Financial Page: The New Yorker
Surowiecki hypothesizes why US consumers (who buy big inefficient cars) also overwhelmingly support higher fuel economy standards which would make such cars much harder to own. Analogy with NHL hockey helmet story.
economics  sport  transportation  environment  energy 
july 2007 by gnat
Cardlink PriceWatch provides a snapshot of the fuel transaction prices throughout New Zealand.
How much Kiwis are paying for petrol. (Hint: half as much again as Americans)
nz  energy  economics 
july 2007 by gnat | Ethanol’s Dissonant Sounds: A Dirge for the Commons
Biofuels will all have water, fertilizer, etc. costs. We just don't have a keen sense of what an acceptable cost is, because we're spoiled on the oil and coal where the costs are negligible because they're non-renewable.
environment  energy 
july 2007 by gnat
Our Biotech Future - The New York Review of Books
green tech, energy, biofuels, poverty, freeman dyson
bio  science  energy  evolution 
july 2007 by gnat
Petrol consumption per day
US vs rest of world on consumption and price. Wow. And if anyone says "yeah, but what about population size?", the "rest of world" includes China and Russia and Brazil and Indonesia and Saudi Arabia and Mexico and ...
economics  energy 
july 2007 by gnat
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