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Esteban Tejedor


The biggest recovery in Europe from a contaminated place: 42,000 tons of tar extracted from a toxic lagoon in Madrid, Spain

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by Esteban Tejedor

Posted on August 4, 2020

The biggest recovery in Europe from a contaminated place: 42,000 tons of tar extracted from a toxic lagoon in Madrid, Spain

With the extracted waste, 60.7 million kilowatts of energy have been obtained through alternative fuel, which is the equivalent of the total energy (thermal and electrical) consumed by 17,416 Spanish households in a year…

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Thousands of primary school children writing to lonely care home residents thanks to a 16-year-old student

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by Esteban Tejedor

Posted on July 16, 2020

Thousands of primary school children writing to lonely care home residents thanks to a 16-year-old student

Nina Andersen, a 16-year old student from London, first set up Community Senior Music, where semi-professional musicians performed concerts at various care homes. After, when the COVID-19 crisis started, she then set up Community Senior Letters, an initiative that has helped match more than 120 primary schools and over 100 care homes, to write letters to elderly with the aim to alleviate their boredom and loneliness. The World Health Organisation (WHO) has announced there is currently no evide…

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A new air filter capable of killing the coronavirus instantly

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by Esteban Tejedor

Posted on July 9, 2020

A new air filter capable of killing the coronavirus instantly

A team of researchers from the University of Houston (USA), in collaboration with the Medistar company, has announced the development of a new air filter that is capable of "catching and killing" the coronavirus responsible for Covid-19 instantly. The work has been published in the Materials Today Physics magazine. It has been proved that the virus can stay in the air for about three hours…

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Pakistan offers work to unemployed people planting trees

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by Esteban Tejedor

Posted on July 2, 2020

Pakistan offers work to unemployed people planting trees

Pakistan is one of the countries in the world hardest hit by climate change: between 1999 and 2018 it has experienced more than 150 extreme weather events, from floods to heatwaves, with total losses of $ 3.8 billion…

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Producing electricity using the shadows

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by Esteban Tejedor

Posted on June 29, 2020

Producing electricity using the shadows

Solar panels have a main problem, they cannot always be used. They have to be outdoors and it has to be sunny. A new device, developed by a team at the National University of Singapore, takes advantage of the difference between shadows and light to generate energy from darkness, so it is much more effective than solar panels. Its generates energy when part of its solar cells are not receiving direct sunlight…

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Drones bringing medicines

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by Esteban Tejedor

Posted on June 24, 2020

Drones bringing medicines

In a time of pandemic, drones are being used to reach the most remote rural areas to bring medical supplies. There are companies like Zipline, delivering medical supplies to Ghana and Rwanda, or Zapallar in Chile. Fast delivery allows these items to land as quickly as possible in these rural hospitals…

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3D printed houses in just 48 hours

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by Esteban Tejedor

Posted on June 15, 2020

3D printed houses in just 48 hours

The construction of 3D printed houses has been trying to take off for several years, but is still in an initial stage. However, a company in the Czech Republic, Prvok od Burinky, has presented an ecological, solid and stylish house that can be built in up to 48 hours, around seven times faster and costing half as much as a brick house. With three rooms and a living area of 43 square meters, the house will be built layer by layer using a reused robot arm from the automotive industry…

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Hydrogen trains getting ready in Germany to combat pollution

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by Esteban Tejedor

Posted on June 12, 2020

Hydrogen trains getting ready in Germany to combat pollution

During a year and a half, two passenger locomotives with a battery that transforms hydrogen and oxygen into electricity have been tested successfully…

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Planting 1 billion trees with a drone in Canada... and beyond

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by Esteban Tejedor

Posted on June 8, 2020

Planting 1 billion trees with a drone in Canada... and beyond

Plants are essential to reduce pollution and curb global warming, as they absorb carbon. To plant a tree, we usually use sacks and shovels. However, technology allows now to do it 10 times faster and 20% cheaper. How? Using drones! A Canadian startup is reforesting a forest in Toronto with 40,000 pine and fir trees after a fire…

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A Norwegian village with sunlight thanks to three huge mirrors

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by Esteban Tejedor

Posted on May 28, 2020

A Norwegian village with sunlight thanks to three huge mirrors

Did you know that vitamin D keeps depression away and regulate circadian sleep cycles? The biggest natural resource of such vitamin is natural lighting. However, there are places on our planet where people receive very few hours of sunlight, especially in certain seasons. In a remote Norwegian town called Rjukan, people live without light for six months a year! The reason, the shadow of the mountains surrounding their deep valley do not let the sun light the streets…

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