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  • Sobre la teoría de la relatividad especial y general - Albert Einstein April 27, 2017
    Entre el Electromagnetismo y la Mecánica newtoniana existe una fórmula de bisagra: la teoría de la relatividad especial y general. La importancia del nuevo marco planteado por Albert Einstein se entiende por lo siguiente: la percepción del tiempo y el espacio es relativa al observador. ¿Qué significa esto? Si usted viaja a una velocidad mayor que la de la lu […]
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  • La teoría del todo - Stephen W. Hawking April 27, 2017
    Una manera clara y amena de acercarse a los misterios del universo. En esta esclarecedora obra, el gran físico británico Stephen Hawking nos ofrece una historia del universo, del big bang a los agujeros negros. En siete pasos, Hawking logra explicar la historia del universo, desde las primeras teorías del mundo griego y de la época medieval hasta las más com […]
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  • El cerebro artístico - Mara Dierssen April 27, 2017
    Los progresos en la neurociencia han ido iluminando aspectos del ser humano hasta entonces reservados a la mera especulación: la conciencia, el pensamiento, las emociones. La creatividad es sin duda una de ellas, pues hay pocas cosas más propiamente humanas que nuestra capacidad de inventar o de alumbrar obras imperecederas. Algo que tiene mucho más que ver […]
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  • Tricks Any Dog Can Do! - Susan Day April 27, 2017
    This great book comes with advice and guidance as to the best way to teach these tricks. It offers more than one method which the reader can choose depending upon their own situation. There is also advice to using treats and shows you how to not end up with a treat junkie! This books is from the desk of Susan Day, a canine behaviourist. Susan teaches obedien […]
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  • Inteligencia emocional para niños. Guía práctica para padres y educadores - Mireia Golobardes Subirana & Sandra Celeiro González April 27, 2017
    ¿Cómo podemos enseñar a los más pequeños a gestionar sus emociones? ¿Cómo ayudar a nuestros hijos a mejorar en sus relaciones con los demás? ¿Cómo facilitar a nuestros alumnos su capacidad para identificar sus emociones y la de los demás y favorecer relaciones sanas y positivas, con empatía y respeto? ¿Cómo contribuir a que padres y profesores puedan también […]
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  • Ágilmente - Estanislao Bachrach April 27, 2017
    Bachrach es Doctor en biología molecular y explica el funcionamiento del cerebro. A través de ello, da consejos y herramientas para ser más creativos y felices en el trabajo y en la vida. La neurociencia es clara: el cerebro aprende hasta el último día de vida. La creatividad puede expandirse. Tu mente, mediante la aplicación de las técnicas correctas, puede […]
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  • La física del futuro - Michio Kaku April 27, 2017
    Un recorrido asombroso a través de los próximos cien años de revolución científica. El futuro ya se está inventando en los laboratorios de los científicos más punteros de todo el mundo. Con toda probabilidad, en 2100 controlaremos los ordenadores a través de diminutos sensores cerebrales y podremos mover objetos con el poder de nuestras mentes, la inteligenc […]
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  • Breve historia de mi vida - Stephen Hawking April 27, 2017
    La mente maravillosa de Stephen Hawking ha deslumbrado al mundo entero revelando los misterios del universo. Ahora, por primera vez, el cosmólogo más brillante de nuestra era explora, con una mirada reveladora, su propia vida y evolución intelectual. Breve historia de mi vida cuenta el sorprendente viaje de Stephen Hawking desde su niñez […]
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  • El gran diseño - Stephen Hawking & Leonard Mlodinow April 27, 2017
    Aun antes de aparecer, este libro ha venido precedido, en todos los medios de comunicación, de una extraordinaria polémica sobre  sus conclusiones: que tanto nuestro universo como los otros muchos universos posibles surgieron de la nada, porque su creación no requiere de la intervención de ningún Dios o ser sobrenatural, sino que todos los universos pro […]
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  • ¿Cómo pensar como Sherlock Holmes? - Maria Konnikova April 27, 2017
    Ningún personaje de ficción es más conocido por sus poderes de intuición y observación que Sherlock Holmes. Pero, ¿es su inteligencia extraordinaria una invención de la ficción o podemos aprender a desarrollar estas habilidades, para mejorar nuestras vidas en el trabajo y en casa? A través de ¿ Cómo pensar como Sherlock Holmes? , la periodista y psicóloga Ma […]
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Here’s what Trump’s latest executive order means for our national monuments.

The order, which Trump will sign Wednesday, directs the Interior Department to review all national monument designations over 100,000 acres made from 1996 onwards.

That includes between 24 and 40 monuments — notably, Bears Ears and Grand Staircase-Escalante in Utah, and Mojave Trails in California.

During the review, the Interior Department can suggest that monuments be resized, revoked, or left alone, Interior Secretary Ryan Zinke said at a briefing on Tuesday. We can expect a final report this summer that will tell us which monument designations, if any, will be changed.

Environmental groups are already voicing opposition. If designations are removed, it could make it easier to eliminate protections and open land to special interests like fossil fuels.

Zinke, a self-proclaimed conservationist, said, “We can protect areas of cultural and economic importance and even use federal lands for economic development when appropriate — just as Teddy Roosevelt envisioned.”

In between further adulations of his hero, Zinke said that he would undertake the “enormous responsibility” with care. “No one loves our public lands more than I,” he said. “You can love them as much — but you can’t love them more than I do.”

[…]

We just hit 410 ppm of CO2. Welcome to a whole new world.

That’s as much as Germany’s yearly emissions.

It’s hardly the first example of a business charging ahead on climate change mitigation while governments dither. Pretty much every giant corporation has made a commitment to reduce its emissions: food titan Unilever, everything maker General Electric, and IKEA (where you get your OMLOPPs), and on and on.

But what Walmart does matters. The company is such a behemoth that its policy changes trigger transformation around the globe. Walmart is the 10th largest economic entity in the world, after Canada, so this effort, dubbed “Project Gigaton,” is akin to every Canadian signing on to a strict sustainability plan.

Most of Walmart’s environmental footprint comes from other businesses extracting raw materials to manufacture Walmart’s products. So it will be pushing its suppliers to clean up their act, aiming to slash a gigaton of greenhouse gas emissions from its supply chain.

The Environmental Defense Fund has been working with Walmart to cut its emissions for years, and so there’s a track record here. In 2010, Walmart pledged to cut 28 million metric tons (like removing 6 million cars from the road), then surpassed that goal in five years. Now, they’re aiming to meet a goal 35 times larger, by 2030.

[…]

Walmart just pledged to eliminate a billion tons of greenhouse gas.

That’s as much as Germany’s yearly emissions.

It’s hardly the first example of a business charging ahead on climate change mitigation while governments dither. Pretty much every giant corporation has made a commitment to reduce its emissions: food titan Unilever, everything maker General Electric, and IKEA (where you get your OMLOPPs), and on and on.

But what Walmart does matters. The company is such a behemoth that its policy changes trigger transformation around the globe. Walmart is the 10th largest economic entity in the world, after Canada, so this effort, dubbed “Project Gigaton,” is akin to every Canadian signing on to a strict sustainability plan.

Most of Walmart’s environmental footprint comes from other businesses extracting raw materials to manufacture Walmart’s products. So it will be pushing its suppliers to clean up their act, aiming to slash a gigaton of greenhouse gas emissions from its supply chain.

The Environmental Defense Fund has been working with Walmart to cut its emissions for years, and so there’s a track record here. In 2010, Walmart pledged to cut 28 million metric tons (like removing 6 million cars from the road), then surpassed that goal in five years. Now, they’re aiming to meet a goal 35 times larger, by 2030.

[…]

The world’s biggest petrostate just set its sights on wind and solar expansion.

For years, oil and gas companies have plumbed the earth beneath Los Angeles. And in most cases the companies and city — surprise! — allegedly sidestepped environmental laws in the process. Poor communities of color have suffered the most. “The city disproportionately exposed people of color to greater health and safety impacts,” says attorney Gladys Limón of the environmental justice nonprofit Communities for a Better Environment.

In 2015, the Center for Biological Diversity and two local youth groups, Youth for Environmental Justice (which is affiliated with CBE) and the South Central Youth Leadership Coalition, sued L.A. The lawsuit claimed that Los Angeles unlawfully allowed oil companies to drill hundreds of oil wells in residential neighborhoods across the city without assessing environmental threats, and that black and Latino residents disproportionately faced health and safety risks.

The city settled out of court in September 2016. As a result, officials created new procedures that oil and gas operators have to follow, including environmental impact studies, and hearings that include residents when the companies want to expand drilling sites.

“I’m really happy that the city listened,” says 16-year-old Giselle Cabrera of Youth for Environmental Justice. “But I still think the fight isn’t over.”

Cabrera is right: Two days before Los Angeles settled, an oil lobbying group called the California Independent Petroleum Association countersued both youth groups, the Center for Biological Diversity, and the city. It was a retaliatory move, Limón says, meant to send a message. If a judge agrees with Limón, the pending countersuit will be struck down as meritless. Turns out the kids ruffled a few oily feathers.


Meet all the fixers on this year’s Grist 50.

[…]

California is gearing up to pass a cap-and-trade law. Again.

For years, oil and gas companies have plumbed the earth beneath Los Angeles. And in most cases the companies and city — surprise! — allegedly sidestepped environmental laws in the process. Poor communities of color have suffered the most. “The city disproportionately exposed people of color to greater health and safety impacts,” says attorney Gladys Limón of the environmental justice nonprofit Communities for a Better Environment.

In 2015, the Center for Biological Diversity and two local youth groups, Youth for Environmental Justice (which is affiliated with CBE) and the South Central Youth Leadership Coalition, sued L.A. The lawsuit claimed that Los Angeles unlawfully allowed oil companies to drill hundreds of oil wells in residential neighborhoods across the city without assessing environmental threats, and that black and Latino residents disproportionately faced health and safety risks.

The city settled out of court in September 2016. As a result, officials created new procedures that oil and gas operators have to follow, including environmental impact studies, and hearings that include residents when the companies want to expand drilling sites.

“I’m really happy that the city listened,” says 16-year-old Giselle Cabrera of Youth for Environmental Justice. “But I still think the fight isn’t over.”

Cabrera is right: Two days before Los Angeles settled, an oil lobbying group called the California Independent Petroleum Association countersued both youth groups, the Center for Biological Diversity, and the city. It was a retaliatory move, Limón says, meant to send a message. If a judge agrees with Limón, the pending countersuit will be struck down as meritless. Turns out the kids ruffled a few oily feathers.


Meet all the fixers on this year’s Grist 50.

[…]

Photo: Spider monkey plays in the trees

Our delightful photo of the day comes from Coba, Mexico. […]

Smart urban commuter bike features built-in sensors, navigation, & performance tracking

The sleek Vanhawks Valour is a carbon fiber beauty that integrates a ‘connected’ platform in a bid to reshape urban commuting. […]