Our News

The city with the highest air pollution by PM2.5 is Kanpur, India, according to a report published in 2018 by the World Health Organization (WHO).

Specifically, the peak was recorded in 2016, with an average of 173 μg of PM.25 per cubic meter, 17 times the recommended maximum.

Kanpur

Kanpur is located on the banks of the Ganges River and is an important industrial center. It covers an area of more than 1,000 km² and has a population of around 2.7 million inhabitants according to the 1991 census.

Industrial and vehicle emissions contribute decisively to polluting Kanpur's air with particulate matter PM2.5.

They are particles that have a diameter less than 2.5 microns (μm is one millionth of a meter), such as fine soot; while the PM10 They include contaminants up to 10 microns in diameter, such as dust or pollen.

Many factories continue to burn coal to obtain the energy required for their production processes and the increase in logistics activity translates into a greater number of vehicles traveling on unpaved roads, with the consequent rise of dust and the constant emission of toxic gases.

In Xataka Science

Nine million people die annually due to pollution

Every year, dozens of its cities appear on the most polluted list, but little or no effort is made to improve air quality. In the latest report, Delhi marginally improved its ranking to sixth place, compared to the most polluted city in 2014.

–
The news

The city with the highest air pollution in the world exceeds the maximum recommended by the WHO by more than 17 times

was originally published in

Xataka Science

by
Sergio Parra

.

He Jackobshavn Isbrae glacier It reached a speed of 45 meters per day, as recorded in August 2004. Thus, it is the glacier that has moved at the fastest speed, as far as we know.

The speed was attributed to an influx of warm seawater into Disko Bay, on the west coast of Goenland.

Titanic and the iceberg the size of Belgium

Since then, the glacier has slowed considerably, especially after a very cold period in 2013.

The curious thing is that it is very likely that the Titanic sank when it collided with an iceberg that broke off from this glacier that holds the speed record. It's not strange something like that: The Jakobshavn Glacier drains 6.5% of the Greenland ice sheet and produces about 10% of all Greenland icebergs. Approximately 35 billion tons of icebergs break off from the fjord each year.

Still, it was not the largest iceberg ever documented that stood in the path of the largest ship. That title is held by another: on November 12, 1956, the crew of the USS Glacier sighted a tabular iceberg with an estimated area of more than 31,000 square kilometers, that is, more than the surface of Belgium.

The iceberg measured 335 kilometers long and 97 kilometers wide. They spotted it west of Scott Island, in the Antarctic Ocean.

–
The news

It is likely that the Titanic sank after colliding with an iceberg that broke off from the fastest glacier: 45 meters per day

was originally published in

Xataka Science

by
Sergio Parra

.

Aptera has opened the possibility of placing orders for a solar electric vehicle that can be equipped with batteries that allow a range of up to 1,600 kilometers. He Aptera solar EV provides up to 72 kilometers of autonomy per day without needing to be plugged in.

Its manufacturers claim that its 180 small solar panels, which make up an area of more than three square meters, will collect enough energy to make all this possible.

Aptera

With a vaguely aeronautical-looking two-seat cabin, the Aptera has an 'unheard of' drag coefficient of just 0.13. Compare that to, say, the Concept V's 'incredibly low' 0.24 drag coefficientolkswagen ID Space Vizzion. It is also completely constructed of carbon/kevlar/flax composites, which makes it very light and resistant.

As for the engine, there are multiple options available, with liquid-cooled electric motors on either the two front wheels or all three.

Battery sizes will also vary, so a range of 400, 644, 965 km or up to 1600 km. To get an idea of how efficient this three-wheeled vehicle is, the Tesla Model S P100D had a radical increase in efficiency this year and can now reach 650 km with a battery of the same size.

To be fair, Tesla has actually already put its cars on the road, and Aptera has only reached the production prototype stage so far. But it is ready to accept reservations for the 'Paradigm' and 'Paradigm+' special edition vehicles that will be produced in 2021.

–
The news

This new electric vehicle is now capable of reaching 1600 kilometers of autonomy

was originally published in

Xataka Science

by
Sergio Parra

.