https://www.science.org/toc/science/387/6738

Editorial

Is the air we breathe safe?

Authors talks about the need to upgrade air quality standards, modernize analysis methods and improve monitoring systems.

Attention is drawn to the concentration of biological agents (bioparticles), an indicator whose influence yet remain understudied.

The issue of the importance of preparing indoor air of dust and gas content is raised.

News

Thanks to improved protocols for analyzing air micro-bubbles trapped in ancient mineral crystals, it was possible to refine data on the oxygen content in the distant past. It turned out that this value was greater than expected by indirect methods. Thus, 1.4 billion years ago it was 1%, and 815 million years ago — 6.6%.
For such analysis, a vacuum press is a method for obtaining a sample and mass spectrometry is for detection.

The step in the revival of the Woolly mammoth species is raising ethical and conservational concerns. This step was taken by Colossal Biosciences, which created a woolly mouse by editing several genes.

Letters

National climate action plans need to be upgreded to include measures on plastic waste and emissions associated with its production.

Research

Science family journals

It has been proven that acetyltransferase GCN5 is an agent of inflammation not only in peripheral tissues but also in the brain, which can be used in the therapy of neuroinflammation.

An alternative to antiretroviral therapy has been proposed, vectors based on adeno-associated virus. They carry antibodies to the simian immunodeficiency virus (stop the replication of the virus).

Other journals

It has been found that even outside protected natural areas, close human presence leads to the extinction of sensitive species. This supports the assumption of a connection between ecosystems, and therefore the need to develop new approaches that take into account not only individual ecological units, but also the connections between them.

Timing of food intake affects metabolism and weight management. It has been found that metabolic disorders and weight problems caused by wrong eating timing can be transferred from mothers to their offspring.

It has been established that one of the associated factors of endometriosis is inflammation.

Articles

The commensal role of the microfungus has been established, which is especially important in the early stages of development. Thus, we can talk about the importance of neonatal microbiota in preventing metabolic disorders.

A shift in the distribution boundary of plant species in America’s cloud forests has been established. Researchers attribute this to climate change.

A 22% reduction in the abundance of representatives of the Lepidoptera order, which applies to the entire territory of America, to almost all species, was found.