Thoreau’s Walden Pond is under threat from human activities

April 6, 2018 by  
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In his book first published as  Walden; or, Life in the Woods , transcendentalist Henry David Thoreau reflected on living simply in green spaces while cultivating self-sufficiency and carefully observing the natural world. His reflections were informed by his experiences living in a cabin near the edge of Walden Pond in Concord, Massachusetts . Today, Walden Pond remains a cherished local landmark, where people enjoy hiking and swimming. However, since Thoreau’s time, Walden Pond has suffered from climate change,  erosion  and even human pee. In the mid-1800s, Thoreau described the “crystalline purity” of the water in Walden Pond, a characteristic still observable today. However, that may soon change as the effects of climate change take hold. In  a recently published paper on the environmental health of Walden Pond , researchers concluded that major changes in the algal content of the lake began in the 20th century and continue to threaten it today. According to the paper, “The sediment darkening and high percentages of [ algae ] in the recent sediments of Walden Pond … indicate not only that the lake ecosystem is now quite different from that described by Thoreau but also that it may be primed for more severe reductions in water clarity in a warming future.” Related: Thresher sharks die in Massachusetts – likely due to cold shock As global temperatures continue to rise , more people looking for relief from the humid summer weather in Massachusetts may find their way into the pond for a refreshing dip. Researchers concluded that more than half of the phosphorous content in the pond “may now be attributable to urine released by swimmers.” The good news is that Walden Pond has seen its environmental health improve in recent decades. However, vigilance is necessary to preserve Walden for future generations. Via The Guardian Images via Ekabhishek , Terryballard and Cbaile19

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Thoreau’s Walden Pond is under threat from human activities

The world’s first space hotel could launch by 2022

April 6, 2018 by  
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We’ve all heard of the companies promising to launch humans on trips to space , but have you thought about where you will stay once you get there? Startup Orion Span thinks they have the answer – and they’re planning to launch a luxury space hotel into orbit in the next few years. If this sounds like something you’d be interested in, start saving your pennies – a 12-night stay will set you back a mere $9.5 million PER PERSON. But don’t worry, the price includes transportation, food and drinks, and a three-month training course. The Aurora Station hotel will be able to accommodate four guests at a time, plus two crew members. The station will float above the Earth in low orbit (about 200 miles above the planet – 50 miles below the ISS) and the company claims it will be ready to start hosting guests by 2022. That’s extremely soon – keep in mind that other companies have set lofty goals for space hotels that didn’t quite get realized . The company plans to start with one station and expand as demand grows. If you want to book your stay right away, 80k will hold you a spot until the hotel is built and launched. Related: Elon Musk says trips to Mars coming as soon as next year Speaking of, Orion Span hasn’t provided much in the way of details for its space hotel. For instance, the company says it plans to manufacture the station at a Houston facility that hasn’t been built yet. Nor has it disclosed how it plans to transport people to the station – it seems likely that it will team up with one of the companies who is developing private space travel. Even still, it’s a pretty exciting idea, and not a bad price considering that it costs $81 million for an astronaut to hitch a ride to the ISS on a Russian rocket. Via Engadget Images via Orion Span

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The world’s first space hotel could launch by 2022

MIT’s mind-reading AlterEgo headset can hear what you’re thinking

April 6, 2018 by  
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Have you ever wished you could simply think a command and your computer would respond? That’s the future envisioned by Massachusetts Institute of Technology (MIT) researchers who created AlterEgo, a wearable system that allows you to converse with a computer without using your voice or movement. According to a video on the project from MIT Media Lab, the ultimate goal of AlterEgo is “to combine humans and computers.” A computing system and wearable device comprise AlterEgo, a futuristic project led by graduate student Arnav Kapur of the Fluid Interfaces group at MIT . Electrodes, a machine learning system, and bone-conduction headphones help get the job done: the electrodes “pick up neuromuscular signals in the jaw and face that are triggered by internal verbalizations — saying words ‘in your head’ — but are undetectable to the human eye,” according to a MIT News statement. A machine learning system, trained to correspond certain signals with words, receives the signals. The bone-conduction headphones “transmit vibrations through the bones of the face to the inner ear.” Related: Elon Musk’s latest company aims to make us cyborgs within the next four years The video on AlterEgo shows Kapur experimenting with the device, asking for the time or adding up prices in a grocery store without ever saying a word out loud. While the commands he gives are simple, typically involving a single word or number, the video feels like a scene right out of science fiction. MIT professor Pattie Maes, who is Kapur’s thesis advisor, said in MIT’s statement, “We basically can’t live without our cell phones , our digital devices. But at the moment, the use of those devices is very disruptive. If I want to look something up that’s relevant to a conversation I’m having, I have to find my phone and type in the passcode and open an app and type in some search keyword, and the whole thing requires that I completely shift attention from my environment and the people that I’m with to the phone itself.” Part of the goal for a project like AlterEgo is to allow users to stay in the moment. In a usability study with the prototype wearable interface, the system’s average transcription accuracy was around 92 percent, according to MIT News. Kapur, along with Maes and undergraduate student Shreyas Kapur, wrote a paper on AlterEgo and presented it at the Association for Computing Machinery ‘s ACM Intelligent User Interface conference , which took place last month in Tokyo, Japan. + MIT News Image via Lorrie Lejeune/MIT

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MIT’s mind-reading AlterEgo headset can hear what you’re thinking

After COP21, shareholders lobby on behalf of climate

January 22, 2016 by  
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A shareholder initiative started by Walden Asset Management requests that oil and coal companies disclose lobbying activities and review their advocacy on energy policy and climate change.

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After COP21, shareholders lobby on behalf of climate

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