As Oil Crashed, Renewables Attracted Record $329 Billion in 2015 – Bloomberg Business

The slump in oil prices that’s brought upheaval and cost-cutting to the traditional energy industry spared renewables such as solar and wind, which raked in a record $329.3 billion of investment last year.

Source: As Oil Crashed, Renewables Attracted Record $329 Billion – Bloomberg Business

The 2050 diet: How to save the planet and eat sustainably for a planet of 9 billion people for $10 a day

Interesting subject, and while the article might not be the most clearly written there is enough information to look into for further reading.
As always be cautioned about “one truth” solutions, these main point seems reasonable, although I’m not sure about fourth point about milk alternatives, but here is the list:

What are the Fastlane Lessons 1 for a 2050 diet?

  1. Local, organic and seasonal, grass-fed, antibiotic free, non-GMO, rainforest alliance (or similar) wherever possible
  2. Fresh over frozen food
  3. Reduce meat and dairy by at least 50%. Have a maximum
    1. Cheese 28g a day (about the size of ½ Mars Bar)
    2. 1/3-1/2 a pint or a glass of milk / yogurt a day
    3. 1 chicken breast size a week or a 1 medium sized chicken to share a week
    4. 1 tin or piece of fish tinned if it is not local
    5. 2 eggs a week
    6. choose poultry, game or fish over red meat
  4. Go for milk alternatives: choose rice, soy and almond milk from sustainable sources. Hemp or hazelnut milk is a viable option instead
  5. Ship freighted foods, not air-freighted
  6. Try out foods of the future: insects, seaweed, meal replacements.
  7. Make your focus other than this vegan: nuts, seeds, veg and fruits and locally caught, seasonal and sustainable fish in moderation
  8. Eat wholegrain bread and pasta
  9. Focus on olive oil (eaten at low temperatures) and coconut oil for cooking at higher  temperatures
  10. Limit rice to once a week
  11. And no bottled water

One important subject that is not touched upon though is food waste throughout the production and consumption chain!

Source: The 2050 diet: How to save the planet and eat sustainably for a planet of 9 billion people for $10 a day

Free Urban forestry software suite from USDA: i-Tree Tools

Interesting looking tools from USDA; worth looking more into. We could all use more trees in our cities and these tools help show why (if you where ever in doubt).

i-Tree is a state-of-the-art, peer-reviewed software suite from the USDA Forest Service that provides urban and community forestry analysis and benefits assessment tools. The i-Tree tools help communities of all sizes to strengthen their urban forest management and advocacy efforts by quantifying the environmental services that trees provide and the structure of the urban forest.

Developed by USDA Forest Service and numerous cooperators, i-Tree is in the public domain and can be downloaded for free

Source: itreetools.org

What is the true value of trees? | Centennial Parklands Blog

“Trees provide a greater value for the community that merely ‘looking nice’.”

“Trees in an urban environment can be nice to look at, provide (at times) much needed shade and can break up the monotony of a built environment. But trees provide much greater benefit to the community.”

“Trees, we know implicitly, are good for us, our environment and our cities. But there is also an economic good to trees.This recent article in The Guardian introduces a new way for some to consider the importance of trees – Treeconomics. While it sounds crude to the ordinary person, to consider trees as an economic good can actually help landowners, policymakers and even big business to pay more attention to trees.”

The climate benefits of trees

Other research (summarised here and here) look at the climate benefits that trees in urban landscapes provide, including:

  • Trees clean the air – they absorb odours, pollutants and filter particulates from the air
  • Trees cool our cities – they shade homes and streets, break up urban “heat islands” and release water vapour into the air through their leaves.
  • Trees conserve energy – strategically placed trees around buildings can reduce summer air-conditioning needs (for example).

As we consider, as a planet, how we can reduce our environmental impacts and mitigate any future rises in global temperatures, a ‘greening of our cities’ is certainly part of the answer. See how Melbourne City Council is looking at these issues or what was the outcome of recent joint research by the City of Sydney / UTS.

 

The social benefits of trees

There are numerous social benefits coming from trees in an urban setting, including:

  • Trees increase quality of life in our cities
  • Trees create a personal connection to the natural world
  • Trees can create social cohesion around a sense of community identity and pride

And some research even finds that the presence of trees in urban settings reduces violence and reduces levels of fear and tension for residents.

Source: What is the true value of trees? | Centennial Parklands Blog

Hvor meget energi bruger man på at lave en vindmølle? | Ingeniøren

En læser vil gerne høre, om der er lavet udregninger på, hvor meget energi der bruges på at lave vindmøller, og hvor længe det tager at hente energien hjem.

Rasmus Windfeld, pressechef i Siemens, svarer:

Det korte svar er 9,5 måneder. Det er den tid, en vindmøllepark skal være operationel, før den har produceret grøn energi, svarende til den energi, der er brugt til at producere den.

Den mest krævende del er materialeudvindingsfasen, som står for 69 procent af CO2-udledningerne, herunder fortrinsvis materialerne til tårnet og fundamentet, da stålindvinding er en krævende proces.

Produktion, installation og operation står for hhv. 6, 12 og 13 procent. Derudover kalkulerer vi med at kunne modregne 18 procent som følge af genbrug af materialer til fremtidige produkter.

Source: Spørg Scientariet: Hvor meget energi bruger man på at lave en vindmølle? | Ingeniøren