Aswath Román - electrical engineer - Deepstash

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Aswath Román - electrical engineer

This is where the concept of sky cooling comes in. 

It was inspired by ancient Persians:

 They would spread water out in the desert, in the hot desert, in a thin layer, and overnight it would form ice. And then that ice could be stored in cooling warehouses.


11 reads


Rose Muto - clean energy researcher

Africa must be prioritized when it comes to what's left in the carbon budget.

For three main reasons:

  1. First Africa isn't the culprit of climate change. It's a victim, facing the worst impacts of extreme weather, drought and heat. Yet


2 reads

Cooling systems today collectively account for 17 percent of the electricity we use worldwide – because of climate change, we need even more energy to cool ourselves, our homes, our data centres, everything. 

We are trapped in this vicious cycle...



2 reads

Aswath Román - electrical engineer

Aswath created a multilayer optical material, more than 40 times thinner than a typical human hair, and able to do two things simultaneously. 

  1. First, it sends it heat out precisely where our atmosphere lets that heat out the best, targetting in the win...


13 reads

Monica Orea - transportation expert

Despite already promoting biking, public transit, walking, there is a problem with air pollution because of road transportation.

But Amsterdam has a plan to go emissions free by 2030.


12 reads

Rose Muto - clean energy researcher

  • Billions of people in LEDCs simply lack enough energy to build a better life. (ie to run their businesses without daily blackouts/preserve their crops from rotting/power lifesaving medical equipment) Unreliable, expensive energy prevents them from growing and prosper...


2 reads

Rose Muto - clean energy researcher

Sadly, the world is looking at Africa in a completely contradictory way.

  • When one side wants them to grow, to emerge from abject poverty, to build a middle class and become the next global market
  • But, anxious to demonstrate action on climate change, ric...


1 read

Californians use more electricity playing video games than the entire country of Senegal uses overall – this is an example of the global energy inequality.



4 reads

Karen Schreiber - Chemist

Concrete is made with limestone (fossil carbon), which requires the burning of fossil fuels to get to super high temperatures that allow you to break down the limestone and turn it into concrete.

Yet concrete is an intrinsically low impact material


10 reads

Rose Muto - clean energy researcher

Yet US and China have been burning through the carbon budget with no restrictions, allowing them to develop to where we are today.

Africa has not benefited from that.

And so, any remaining carbon budget should be allocated to them so that th...


1 read

Karen Schreiber - Chemist

Luckily, chemists are inventing a new way of making cement that cuts down on the release of that CO2. 

L.C 3 uses Calcine clay: it is heated to around 800 degrees Celsius, (significantly lower than the 4050 needed to produce cement.) and th...


9 reads

Aswath Román - electrical engineer

That ice formed, even though the temperature never dropped to freezing.

This is because of a window in our atmosphere

Certain wavelengths of heat pass right through our atmosphere and back out into space. 

So even thou...


9 reads

Morat Asawa Burke – Soil researcher

There's twice more carbon in soil than there is in vegetation and air - hence a very small change in the amount of carbon stored in soil can make a big difference in maintenance of the Earth's atmosphere.

 The main problem is most of our agriculture is designed in a...


41 reads

Monica Orea - transportation expert

To make this work, we need this kind of pincer movement.

  1. bottom-up pressure = people making these changes on their own (bike more /transitioning from an internal combustion engine car to an electric car) 
  2. topmost level...


4 reads

Monica Orea - transportation expert

But electric cars aren’t fool proof, sometimes what has happened is that tailpipe has moved many miles away.

We hope that the electric comes from to a solar farm but in most cases it comes from a coal fired power plant


3 reads

Monica Orea - transportation expert

Luckily the technologies we need for this transformation are here today commercially available, getting cheaper and getting better.

E.G the huge bus fleets in China are being switched over to electric : single biggest thing that has been done in the transportation s...


3 reads

Tom Schuler -mechanical engineer/professor/CEO of a cement startup

Tom uses the idea that they could cure the concrete with pure CO2 itself, trapping it inside.

This could transform the third largest emitter as a country in the world to a net sink.


8 reads

Yvonne Acky Sawyer - Mayor

Yvonne Acky Sawyer is the mayor of Freetown, which is in Sierra Leone.

 Freetown has been suffering some of the extreme weather due to climate change. 

She ran for mayor with the goal to increase vegetation cover by 50 percent in Freetown by the end of her ter...


10 reads


The history of refrigeration

The history of refrigeration

Refrigeration is the action of creating cooling conditions by removing heat. It is used for preserving food by slowing bacteria growth.

  • Around 1000BC, the Chinese used to cut and store ice.
  • Five hundred years later, the Egyptians and Indian...

A new drink

Unlike a latte or a cappuccino, in which the froth comes from aerated milk, the fluffiness of dalgona coffee comes from the coffee and sugar itself.

Dalgona coffee was almost nonexistent until January 26 this year. A Korean YouTuber posted a clip where he uses a mixer to whip coffee, su...



The red planet is actually many colors. At the surface, we see colors as brown, gold, and tan. The reason Mars looks reddish is due to oxidization—or rusting—of iron in the rocks, regolith (Martian “soil”), and dust of Mars. This dust gets kicked up into the atmosphere and from a distance makes t...

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