Digital mapping + solar = sustainable cities?
A new tool combines Google satellite imagery with light detection and ranging data, calculating the potential hourly solar energy production of a city.
Ifixit produce open repair guides for everything imaginable, in a variety of languages, and help sustain a global community of independent repairers who divert electronics from e-waste dumps and keep poor and marginalized people connected to their work, school and families.
The Ifixit repair kits are thoughtful, high-specification, low-cost toolkits designed to work on all modern gadgets, as well as traditional ones (for example, Ifixit manufacture their own drivers for Apple’s bizarre “pentalobe” screws, which Apple had instructed its Genius Bar staff to quietly swap in during routine repairs).
The big daddy of Ifixit kits is the $130 128-bit Universal Bit Kit, which comes in a handsome wooden case and is covered by Ifixit’s lifetime warranty.
But Ifixit makes smaller, more specialized kits, including theSmartphone Repair Kit, priced at $25, specifically aimed at the budgets of enterprising high-school students who want to start their own smartphone repair businesses, using Ifixit’s manuals.
http://boingboing.net/2015/12/02/ifixit-repair-kits-everything.html
Amazing Maps of the World
The study authors have calculated the cost of the “lost ecosystem services value” our planet has suffered in the last decade and a half. According to their calculations, the loss due to land degradation averages US $43,400 to $72,000 per square km, some US $870 to $1,450 per person, globally each year. The percentage of the world’s land affected by land degradation has grown a lot in the last decades – it has doubled between the late 1970s and the early 2000s. And the process is far from its end.
“This study by ELD shows the immediate and global impact of land degradation and highlights that actions to tackle it pay off,” Karmenu Vella, European Commissioner for Environment, Fisheries and Maritime Affairs commented on the paper.
“Increased land degradation is also one of the factors that can lead to migration and it is being exacerbated by climate change. On our planet, the area affected by drought has doubled in 40 years. One third of Africa is threatened by desertification. As President Juncker said in his State of the Union speech last week, climate refugees will become a new challenge – if we do not act swiftly.”
Antibiotic resistance is one of the biggest threats to global health today.
It is compromising our ability to treat infectious diseases and undermining many advances in health and medicine. This can affect anyone in any country, and is not just a problem for regular antibiotic users.
Look at the causes and tips provided by the World Health Organization (WHO) to find out what you can do.
How much do you know about #AntibioticResistance? Take this quiz: http://goo.gl/3FRuKQ
Floating cabin in Washington State.
Photograph by Peter Baker.
Researchers at MIT have developed a new method for harnessing energy generated by very small bending motions, which could be capable of harvesting power from a broader range of natural human activities such as walking and exercising.
Yale Environment 360: New Device Harvests Energy From Walking and Exercising, Researchers Say
Did Mars once have life? To help answer that question, an international team of scientists created an incredibly powerful miniature chemistry laboratory, set to ride on the next Mars rover.
The instrument, called the Mars Organic Molecule Analyzer Mass Spectrometer (MOMA-MS), will form a key part of the ExoMars Rover, a joint mission between the European Space Agency (ESA) and Roscosmos. A mass spectrometer is crucial to send to Mars because it reveals the elements that can be found there. A Martian mass spectrometer takes a sample, typically of powdered rock, and distinguishes the different elements in the sample based on their mass.
After 8 years of designing, building, and testing, NASA scientists and engineers from NASA’s Goddard Space Flight Center said goodbye to their tiny chemistry lab and shipped it to Italy in a big pink box. Building a tiny instrument capable of conducting chemical analysis is difficult in any setting, but designing one that has to launch on a huge rocket, fly through the vacuum of space, and then operate on a planet with entirely different pressure and temperature systems? That’s herculean. And once on Mars, MOMA has a very important job to do. NASA Goddard Center Director Chris Scolese said, “This is the first intended life-detecting instrument that we have sent to Mars since Viking.”
The MOMA instrument will be capable of detecting a wide variety of organic molecules. Organic compounds are commonly associated with life, although they can be created by non-biological processes as well. Organic molecules contain carbon and hydrogen, and can include oxygen, nitrogen, and other elements.
To find these molecules on Mars, the MOMA team had to take instruments that would normally occupy a couple of workbenches in a chemistry lab and shrink them down to roughly the size of a toaster oven so they would be practical to install on a rover.
MOMA-MS, the mass spectrometer on the ExoMars rover, will build on the accomplishments from the Sample Analysis at Mars (SAM), an instrument suite on the Curiosity rover that includes a mass spectrometer. SAM collects and analyzes samples from just below the surface of Mars while ExoMars will be the first to explore deep beneath the surface, with a drill capable of taking samples from as deep as two meters (over six feet). This is important because Mars’s thin atmosphere and spotty magnetic field offer little protection from space radiation, which can gradually destroy organic molecules exposed on the surface. However, Martian sediment is an effective shield, and the team expects to find greater abundances of organic molecules in samples from beneath the surface.
On completion of the instrument, MOMA Project Scientist Will Brinckerhoff praised his colleagues, telling them, “You have had the right balance of skepticism, optimism, and ambition. Seeing this come together has made me want to do my best.”
In addition to the launch of the ESA and Roscosmos ExoMars Rover, in 2020, NASA plans to launch the Mars 2020 Rover, to search for signs of past microbial life. We are all looking forward to seeing what these two missions will find when they arrive on our neighboring planet.
Learn more about MOMA HERE.
Learn more about ExoMars HERE.
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