Hello, Habr! It so happened that my colleague and I today published a scientific article in BioEssays magazine devoted to the analysis of conspiracy theory, which was originally formulated in the form of a post on Habré. It seemed logical to me to publish the analysis not only on my blog, but also here, especially since kind people invited me here.
In early February this year, WHO specialists who visited Wuhan said at a press conference that they exclude [1] the version of the artificial origin of the SARS-CoV-2 coronavirus. The virus probably came from bats through an unknown intermediate host.

Indeed, during the epidemic, a lot of versions appeared in the media about the artificial origin of the coronavirus. Most of them suspected the Wuhan laboratory, but there were also accusations against the United States and even the Russian "Vector". It was argued that SARS-CoV-2 was made using the sequences of the HIV genome, human genes, that this is a coronavirus from a scientific publication in the journal Nature - all this was discussed in detail on the pages of my blog
MeLavi 19 march 2021, 17:36

For about a week, an Arctic storm raged in the United States. Atypically cold temperatures and snowstorms have covered half the country, but the worst is in Texas. The southern state's power grid failed to cope with the load, leaving millions of people without water, electricity and heat. Why did it happen?

First, the conditions are truly extreme. There has not been such a winter for almost 10 years, and in some places absolute records of negative temperatures have been set. Usually in Texas in winter there is a plus or a weak minus, and here in some places frosts are up to -20. Accordingly, the infrastructure and people are not ready for this. On the icy roads, dozens of dead, about 12 million people are experiencing problems with a shortage of water (pipes freeze), up to 3 million households were left without electricity and heat, people were forced to evacuate from their homes or warm up and spend the night in cars.

imageThose who have gas, but no electricity, warm themselves like this. Photo by Ashley Landis / AP
Papay 19 march 2021, 17:30

... According to statistics, 100% of the population of Mars are robots.

In recent days, only the lazy has not watched reports on the Perseverance rover (Perseverance, emphasis on the last "e"). On the Internet, you can even listen to the wind of the red planet, it barely breaks through the buzzer of the rover's mechanical joints.

Today we will change the focus a little and talk about more mundane things. What technologies enable the rover to work? How are cloud companies involved in space exploration? And in general - what are the plans of mankind for the Martian lands in the framework of an ambitious mission.
Cloud computing helps the rover stay on track
Amazon Web Services (AWS) recently talked about the role cloud computing plays in processing data from Perseverance.

During the entire mission, NASA is going to store and process arrays of information coming from Mars in the AWS cloud. For a moment, every day the rover sends a record number of photos, audio and video recordings.

imageAWS Representative Jaime Baker presents Cape Canaveral King's Ticket to Name the Mars Rover 2020 winner Alex Mather and his family. Photo: (NASA / Aubrey Geminiani) Recall that during 2020, a competition was held in the United States for the best name for a new Mars mission.
Killer 17 march 2021, 16:52

Hey! I work at Joom on the infrastructure team. In my practice as a code reviewer, I regularly encounter the fact that the author does not understand that the reviewer is not a magic black box into which you can throw any changes and get feedback on them. The reviewer, like the author, as a human being, has a number of weaknesses. And the author should (if, of course, he is interested in a quality review), help the reviewer as much as possible.

I want to tell you how the author of the code can simplify the work of the reviewer and thereby increase both the quality of the review and the productivity of the reviewer. This article may well be used in your internal corporate documentation as a guide for preparing changes for review. It, in fact, was compiled from such a guide.

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Why do we do a code review
You probably know this without me. Therefore, I will tell you about the very basics, without going into details.
MeLavi 17 march 2021, 16:48

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Recently, more and more news appears like "video chips are not enough", "processor shortage", "laptop supplies are under threat." And this is not just news, but a reflection of reality, which is even worse than it might seem. According to experts, problems in the semiconductor market will persist until the end of this year.

The main reason is the digitalization of everything and everyone, the transition to online, the increase in traffic volumes, etc. The industry turned out to be unprepared for the post-covid reality. As a result, we have a global shortage in the chip market that threatens the normal operation of many industries, from automotive to laptop and industrial systems.
Skull 15 march 2021, 16:11

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It happened during the destruction of a star by a black hole, next to which this star was. As a result, a high-energy neutrino was formed, which became a real gift for earthly science. One of the important conclusions that can be drawn is that such phenomena are natural accelerators and generators of elementary particles, and very powerful ones.

Having traveled insane by our standards, the neutrino reached the South Pole in October 2020, where it was registered by an elementary particle detector. This complex system is located right under the ice, it serves to detect high-energy particles coming to us from afar. A few months later, a telescope in California was able to "see" a flash of light in the very galaxy referred to in the title, and where the neutrino came from.
MeLavi 15 march 2021, 16:08

New GKE mode is more expensive and less flexible, but easier and safer
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Autopilot in GKE manages pods for you

Two things are well known about Kubernetes clusters. The first is that it is absolutely the best tool for the mission-critical task of container orchestration. And second, its complexity is a barrier to implementation and a common cause of errors. Even Google, the inventor and main promoter of Kubernetes, admits it.

To simplify the deployment and management of clusters, the company provided all GKE customers with access to the service. Autopilot which google already has been using Borg in its own clusters for a long time ... It is automatic resource configuration based on machine learning.
KlauS 14 march 2021, 18:58

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The moon is the closest neighbor of the Earth, and now mankind continues to actively study our satellite. Not so long ago, the Chinese sent a station to the moon, which completed a number of scientific tasks. Now the European Space Agency plans to join the direct study of the moon. Only not its surface, about which a lot is known, but caves.

Yes, there are caves on the moon, and quite a few. Some of them can serve as a reliable shelter for lunar colonists, which will allow them to avoid a number of dangers that threaten on the surface. ESA collected lots of ideas proposed by scientists and engineers and selected the five most promising. Then another stage of selection followed, so now the agency has three ideas that are planned to be implemented. They are all interconnected.
Tags: moon, Robots
Papay 13 march 2021, 13:07

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Summary: due to the presence of hydrogen bonds in water molecules, the configuration of the O-H covalent bonds changes, with the accumulation of additional energy in them, released during cooling and working as an additional heating that prevents freezing. In hot water, the hydrogen bonds are stretched, the covalent bonds are not strained, the energy storage is low-cooling and freezing is faster. There is a certain characteristic time tau required for the formation of hydrogen bonds; if the cooling process proceeds slowly, then the Mpemba effect will disappear. If the cooling process proceeds relatively quickly (up to tens of minutes), then the effect is pronounced. Probably, there must also be some critical temperature, starting from which the effect appears, but this is not reflected in the article.
Tags: physics
xially 12 march 2021, 16:58

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Would it surprise you if I said that BASIC is still relevant? In addition to being the progenitor of modern home computing, the language is still viable even outside the retro-enthusiast circles. We propose to plunge into a brief overview of the history of its formation, starting from the basics and ending with modern implementations.
xially 12 march 2021, 16:50
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