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This document is a collection of letters from readers published in New Scientist. The letters cover a range of topics, including the search for advanced alien life, the potential of regenerative agriculture to combat climate change, alternative sources of omega-3 for vegetarians and vegans, the challenges of addressing eco-anxiety, the complexity of the economy, the nature of dark matter, the impact of vines on buildings, the risks of technological optimism, the concept of living in a simulation, and the philosophical implications of the quantum multiverse. The letters provide diverse perspectives on these subjects and offer insights into current scientific debates. [Extracted from the article]

This document is a collection of letters from readers published in New Scientist. The letters cover a range of topics, including personal experiences with glucose monitors, theories of everything and abstract geometry, the origins of asteroids, exercise therapy for long covid, the limitations of ancient Greek engineering, the mystery of consciousness, brain changes when playing musical instruments, the impact of climate change on extreme weather events, the subjective nature of tedious tasks, the importance of cars in rural areas, and contact information for submitting letters to the magazine. [Extracted from the article]

Editor's pick Mare vegan food please, but less processed fake meat 28 January, p 13 From Erik Foxcroft, St Albans, Hertfordshire, UK I agree that reducing the amount of meat served in schools and other institutions would be good for the planet and could lead to changes in eating habits. Tune in to the Echo of Eternity if you dare 31 December 2022, p 46 From Patrick Gaydecki, professor of digital signal processing, University of Manchester, UK Your feature on the use of soniflcation to reveal the sounds of space was intriguing. It was impractical to ensure adequate heat-processing of the waste meat and the practice was later banned, but not before a consequent condition called variant Creutzfeldt-Jakob disease (vCJD) emerged in people due to infected meat. [Extracted from the article]

Letters to the editor are presented in response to articles in previous issues including a U.S. Department of Defense (DoD) report calling on all nations to work together to combat climate change in the October 18, 2014 issue, one on how economies could have arisen without fossil fuels by Michael Le Page in the October 18, 2014 issue, and one on the dangers to human health from the inadequate organisation of health services by Harvey Rubin and Nicholas Saidel in the October 25, 2014 issue.

Several letters to the editor are presented in response to articles in previous issues including one the impact of population mobility and urbanization on the 2014 Ebola virus disease outbreak in Africa in the August 9, 2014 issue, one on autonomous piloting of commercial airplanes by Paul Marks in the August 9, 2014 issue, and one on electric power distribution to the world's poor by Fred Pearce in the August 2, 2014 issue.

Several letters to the editor are presented in response to articles in previous issues including one by Mark Peplow on how food affects your mind and body in the August 3, 2013 issue, one on autonomous self-driving automobiles in the July 20, 2013 issue, and one by Amanda Gefter on the elimination of infinity in mathematics in the August 17, 2013 issue.

Letters to the editor are presented in response to articles in previous issues on topics that include Japan's Fukushima Nuclear power plant accident in the March 19, 2011 issue, the use of global position systems in critical systems in the March 12, 2011 issue, and an article discussing evolution and creationism by Martin Nowak in the March 19, 2011 issue.

The article presents an answer to the question on why there might be fewer yellow crocuses in Glasgow, Scotland with a variety of animals implicated including birds, squirrels, and mice, and questions as to the impact of a coronal mass ejection or solar flare on photovoltaic solar panels on houses, and how quickly the theory of relativity would have been discovered if physicist Albert Einstein hadn't been born.

Presents a letter to the editor about a hypothetical account on the origin of planets.

Presents a letter to the editor related to an article that previously appeared in the March 12, 2005 issue of the journal "New Scientist."

Presents a letter to the editor about walking.