Editing the 'hosts' file in Windows 10

  Windows 'hosts' file contains mappings of IP addresses to hostnames.

You can find the file in the Windows System32 folder if you run your DOS program with administrative privileges as shown.

You can open this file with Notepad also run with administrative privileges. There is another 'hosts' file related to iCalendar.

It is just a text file that you can edit and save with your changes.

More here:

https://hodentek.blogspot.com/2009/07/in-vista-home-premium-computer-name-is.html

You can also use the "Hostsman" application to edit the "hosts" file:

https://www.abelhadigital.com/hostsman/#downloads

World's first DNA Vaccine for the Wuhan virus

  One more arrow at the heart of this Wuhan virus.

"BENGALURU, Aug 20 (Reuters) - India's drug regulator has granted emergency use approval for Zydus Cadila's COVID-19 vaccine, the world's first DNA shot against the coronavirus, in adults and children aged 12 years and above." - Reuters

This is the second homegrown vaccine (ZyCoV-D) made by the generic drug maker Cadila Health Care of India. The first one, also approved is the Covaxin. It is a needle-free vaccine that does not need very low temperatures. The late-stage trial had 28000 participants with about 1000 in the lower age group (12 to 18).

https://www.zyduscadila.com/

More here:

https://www.bbc.co.uk/news/world-asia-india-57774294 

https://www.axios.com/india-first-dna-covid-vaccine-f07c5105-893c-473f-8c60-8b5aaef28e5a.html

https://www.reuters.com/business/healthcare-pharmaceuticals/india-approves-zydus-cadilas-covid-19-vaccine-emergency-use-2021-08-20/

Client using Python to access data on AWS S3

Python is one of the most trending programming languages and it can use the web framework to create database projects. The client using an intermediary flask server is well suited. 

You can develop a client application using React with Python and access the AWS's S3 bucket via  Flask server.

Here are some relevant links that you may want to look up or quick tutorials to get the hang of it.

How to create a React+Flask Project?

https://blog.miguelgrinberg.com/post/how-to-create-a-react--flask-project

https://rajrajhans.com/2020/06/2-ways-to-upload-files-to-s3-in-flask/

Microsoft Visual Studio provides full support for almost any kind of project:

https://code.visualstudio.com/docs/python/tutorial-flask

https://code.visualstudio.com/docs/nodejs/reactjs-tutorial

https://aws.amazon.com/about-aws/whats-new/2020/07/amazon-s3-features-now-available-aws-toolkits-for-visual-studio-code/

You can get a link to download the latest community version(free) here:

https://hodentek.blogspot.com/2021/07/visual-studio-2022-preview-available.html

An excellent source for EV and Hydrogen

 I think this is an excellent source. It gives everything there is by way of non-fossil fuel energy options for motor vehicles. It provides you the EV Stations on your chosen route which is very useful. 

Point to point route for finding a charging station. The numbers available may be less than that you can find for a gasoline vehicle. We are getting there.

Its main menu provides you different aspects of electric charging.

Some information on Fuel Cell Electrical Vehicles.

If the government is really interested in 'Clean' fuels there is nothing like 'Hydrogen'. It packs more energy than an equivalent liter of gasoline and shoots out water into the atmosphere.

What should be the strategy?

Work on long-haul fleets (Trucks, ships, and airplanes) with hydrogen technology and then move on to the passenger cars. 

Fuel Cell Vehicles (fueleconomy.gov)