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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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6 cosmetics companies with refillable packaging

These makeup brands have cleaned up their packaging along with their ingredient lists. […]

Undulating bamboo pavilion has mathematically inspired form

This project combines high-tech design tools with low-tech materials and techniques to create an expressive form. […]

The Roots of Surprising Passover Seder Traditions From Around the World

The foods that make up the ritual seder meal for Passover — the Jewish holiday that begins this year on Monday evening — are pretty standard, and the family dinners on the first night of the holiday usually showcase traditions that are passed down over generations. That means the seder table can be a great source of history if you know where to look. Joan Nathan, a James Beard Award-winning cookbook author, has seen many variations of these traditions throughout the years. In Los Angeles, she tells TIME, she once witnessed a Persian custom in which, at the point in the seder when the story of the Egyptians as task masters is told, participants slap each other with scallions. And at an Iraqi-Jewish seder in Maryland she saw a custom in which the children dress up as itinerants — complete with bindles full of clothes — to imitate people on the way from Egypt to Israel. “You’re re-enacting the way you felt,” she says (via phone, from a car en route to a seder hosted by her daughter). “The Moroccan Jews take a seder plate and put it over their heads, which is supposed to be their moment to feel what it’s like to go from slavery to freedom.” On the food front, in countries not known for large Jewish communities, there is nowhere to buy the traditional ingredients, so these celebrants have had to learn to improvise over the years. Nathan’s latest cookbook King Solomon’s Table: A Culinary Exploration of Jewish Cooking From Around the World offers a taste of the most creative spins on traditional Passover celebrations around the world. Below is a brief overview of some of the most surprising customs featured, with two recipes for those in the mood to spice up their seders this year: El Salvador In this country of about 6 million people, there are only about 100 Jewish people (at least according to one estimate in 2014). The population came over after World War I, around 1920, from Alsace-Lorraine and Germany. For work, they’d travel by donkey to peddle French perfumes and hardware supplies. Nowadays, these families order matzo meal and kosher meat in October so that it can get delivered in time for Passover in the spring. “When the order comes in from Israel, someone drives to Guatemala and picks them up,” said Delia R. Cukier, the president of the sisterhood of the country’s one synagogue. Ethiopia Nathan attends an Ethiopian shabbat dinner organized by Ethiopian-born Avi Asnkow, who lives on a ranch for Jews in Encinitas, Calif. What’s unique about Shabbat in Ethiopia, he says, is that the food is all served cold, a custom started by Karaites, an ancient sect of Judaism in which the Sabbath prohibition on fire is interpreted to prevent having any flame at all, not just one that is started during the holy day. Before Passover, Ethiopian Jews traditionally broke the clay dishes they ate off over the previous year, and make new ones to use until the following Passover. As TIME once explained the significance of the ritual, “Many Ethiopian Jews, who for hundreds of years endured persecution in their homeland because of their unique religious rites, left Ethiopia in two secret airlifts in 1984 and 1991. The tradition is in keeping with the hope for emancipation and redemption that the holiday signifies.” Get your history fix in one place: sign up for the weekly TIME History newsletter Brazil In the 17th century, as the Spanish Inquisition was taking place, about 300 Jewish families from Spain and Portugal fled to the northeastern Brazilian port of Recife. More arrived after World War I in the 1920s, when they were fleeing from Belarus, where many were being persecuted and forcibly drafted into the Bolshevik army. That’s why many of the Jewish people living in the city today — a community that has somewhere under 2,000 members (a 2005 estimate says 1,200) — eat a mostly Russian-inflected Jewish cuisine. One resident told Nathan that for Passover she serves a traditional Eastern-European gefilte fish, but made from local fish— snapper, hake, grouper and whiting, instead of carp, whitefish and pike. Horseradish root isn’t found in the country, so she makes a version of it out of wasabi powder, beets, sugar, salt and vinegar for the Seder’s bitter herb. India Kochi (or Cochin) is a port city on India’s southwest coast with a Jewish population that dates back to 1341 C.E., when Jewish spice merchants migrated there from Iraq and then Spain after the Inquisition. Nathan visited Queenie Halluega, whom she describes as the “doyenne” of the city’s very small remaining Jewish population. Hallegua makes Passover wine from boiled raisins blended with water, and she describes the traditional means of making Passover-friendly food using ingredients found in India: “Pesach work began in January when we bought rice, cleaned and washed it, pounding some into rice flour,” quoted saying in the book. “We also cleaned chilies, coriander, cinnamon, pepper, ginger, and cardamom and set aside some for Passover.” To make haroset, dates were boiled down in a copper cauldron into a jam known as duvo (Iraqi Jews call it halak), which is eaten with chopped cashews, walnuts or almonds. Brazilian-Belarusian Grouper with Wine, Cilantro, and Oregano yield: 6 to 8 servings 3 pounds (about 1 1/3 kilos) grouper, striped bass, red snapper, pollock, whiting, or sea bream fillets 5 cloves garlic, peeled 1 teaspoon salt, or to taste Freshly ground pepper to taste 2 bay leaves 2 cups (470 ml) dry white wine ¼ cup (60 ml) olive oil 1 cup chopped cilantro
(from about 1 bunch), divided ¼ cup fresh chopped or
1 tablespoon dried crumbled Mexican oregano ½ green bell pepper, diced 1 large tomato, diced ¼ cup snipped chives Heat the oven to 375 degrees. Put the fillets in a large Pyrex dish or other baking pan. With a mortar and pestle or a small food processor fitted with a steel blade, blend together the garlic, salt, and pepper, and spread on fish. Place the bay leaves over the fish. Pour enough wine and olive oil over the fish to almost cover it, then sprinkle ½ cup of the cilantro and the oregano on top. Cover the pan tightly with foil and bake for about 30 minutes, spooning pan juices over the fish two or three times. Cool to lukewarm. Remove the bay leaves and mix the remaining cilantro with the green pepper, tomato, and chives. Sprinkle over the fish and serve. 
 Rickshaw Rebbetzin’s Thatte Idli, Indian Steamed Rice Dumplings with Nuts and Raisins yield: about 8 dumplings 1 cup (55 grams) unsweetened shredded coconut, fresh or dried 8 almonds 8 pistachios 10 to 15 raisins 8 cashews 1 tablespoon grated jaggery, piloncillo, or brown sugar 1 teaspoon salt, divided 1 cup (140 grams) white rice flour Pulse the coconut, almonds, pistachios, raisins, cashews, and jaggery or other sugar in the bowl of a food processor fitted with a steel blade. Remove and set aside. Bring 1 cup (235 ml) of water and 1⁄2 teaspoon of the salt to a boil in a small saucepan. Stir in the rice flour with the remaining 1⁄2 teaspoon salt. Remove from the heat and mix until the water is totally absorbed. Spoon the rice flour mixture into the food processor and pulse until thoroughly mixed and thick. Fill a large sauté pan with about 1 inch of water. Put a bamboo steamer in the pan and line the steamer with a moist paper towel. Bring the water to a boil over medium heat. Fill a small bowl with cold water, then moisten your hands in the water. Scoop up a small, walnut-size clump of the rice flour dough and form into a flat disc, just smaller than your palm. Put about 1 tablespoon of the filling into the center of the disc. Pinch closed, either into a half-moon shape or by folding the sides on top of the filling so they meet in the middle. With wet hands, smooth out the sides. The result will look somewhat like a dumpling. Repeat with remaining dough and filling. Put the dumplings in the steamer, leaving some space between them, as they will expand. Cover and steam for 10 minutes. Remove and serve warm. Note: You can substitute haroset during Passover or even chopped trail mix for the filling. If you don’t have a bamboo steamer, you can use a regular steamer or anything heatproof with holes in the bottom to set over the simmering water. Recipes excerpted from KING SOLOMON’S TABLE by Joan Nathan. Copyright © 2017 by Random House. Excerpted by permission of Alfred A. Knopf, a division of Random House LLC. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher. […]

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‘Gasland’ families are still fighting the company that leaked methane into their water.

In Louisiana, more than 18 percent of households didn’t have access to healthy food in 2015 (the national average is 13 percent). In urban centers like New Orleans, there isn’t enough locally grown produce to feed everyone, especially residents.

Marianne Cufone provides a fresh take on locally grown food. In 2009, she built what she describes as a “recirculating farm” on a half-acre plot in the middle of New Orleans. Using bamboo harvested from right there in Louisiana, she set up floating rafts and towers to grow plants — tomatoes, cucumbers, lettuces, strawberries — in closely packed, in various arrangements around hand dug, rubber-lined fish ponds. Water cycles between the pond and the plants, so nutrients from the fish waste fertilize the plants and the plants filter the water — no dirt required!

Cufone says her farming system is both cost- and energy-efficient, too. Startup costs totaled about $6,000, mostly to install the solar panels and backup batteries that allowed the farm operations to run mostly off-grid. And farms like this could work almost anywhere, she said. “You can grow vertically, in almost any design you want. It doesn’t matter if the land is rocky or paved or even contaminated.”

Cufone’s New Orleans farm initially sold $15 food boxes through a Community Supported Agriculture program and provided produce to local stores and restaurants. In 2011, Cufone started the Recirculating Farms Coalition to promote the idea and secure better policies to help them flourish. That includes pushing for the U.S. Department of Agriculture to allow recirculating farm produce to be certified organic.


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

[…]

Scott Pruitt kinda sorta maybe gets that carbon dioxide contributes to warming.

In Louisiana, more than 18 percent of households didn’t have access to healthy food in 2015 (the national average is 13 percent). In urban centers like New Orleans, there isn’t enough locally grown produce to feed everyone, especially residents.

Marianne Cufone provides a fresh take on locally grown food. In 2009, she built what she describes as a “recirculating farm” on a half-acre plot in the middle of New Orleans. Using bamboo harvested from right there in Louisiana, she set up floating rafts and towers to grow plants — tomatoes, cucumbers, lettuces, strawberries — in closely packed, in various arrangements around hand dug, rubber-lined fish ponds. Water cycles between the pond and the plants, so nutrients from the fish waste fertilize the plants and the plants filter the water — no dirt required!

Cufone says her farming system is both cost- and energy-efficient, too. Startup costs totaled about $6,000, mostly to install the solar panels and backup batteries that allowed the farm operations to run mostly off-grid. And farms like this could work almost anywhere, she said. “You can grow vertically, in almost any design you want. It doesn’t matter if the land is rocky or paved or even contaminated.”

Cufone’s New Orleans farm initially sold $15 food boxes through a Community Supported Agriculture program and provided produce to local stores and restaurants. In 2011, Cufone started the Recirculating Farms Coalition to promote the idea and secure better policies to help them flourish. That includes pushing for the U.S. Department of Agriculture to allow recirculating farm produce to be certified organic.


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

[…]

11 new kinds of clouds named in updated International Cloud Atlas (Video)

Cloud-lovers rejoice: the new, updated and digitized version of the Cloud Atlas is now available, and why this is important for understanding global climate change. […]