Science news this week: A key Atlantic current nears collapse, the world’s biggest iceberg shatters, and mouse brains rewrite neuroscience
The aqueous part of the world dominated our scientific information coverage this week, starting with the alarming prediction that a key Atlantic current, the southern Atlantic reversal circulation (AMOC), which includes Gulf Stream, could start its irreversible collapse for decades.
It is according to a new historical study, which combined the forecasts of 25 climate models to reach an “optimistic” prediction (in a scenario of moderate emissions) that the current will begin to stop because of climate change in the 2060s. Given the vital role of the current in the regulation of world climates, scientists described the study as a “alarm clock”.
Elsewhere, the signs of our world of warming can be seen in the invasion of Antarctic icebergs around the island of Southern Georgia of the South Atlantic. There, the former record of the largest iceberg in the world, A23A, undergoes a dramatic rupture. Meanwhile, deeply under the peaceful ocean, a team of scientists discovered a giant hydrothermal system This could contain clues to the origins of life on earth.
Souris brain scans rewrite the manual
It is not often only one research element is accompanied by the potential to rewrite everything that preceded. However, a massive collaboration of neuroscientists may have done exactly that with Two new studies that have mapped more than 600,000 cerebral cells of individual mice – or 95% of rodent brains.
Scientists hope that the gigantic effort will help them study the parts of the brain of the mammals responsible for making decisions. In the past, scientists assumed that brain activity moves on a linear path, from the visual recognition of a stimulus to the regions responsible for abstract thought, mixed with differences in memory regions to get out of experience.
But the new research has revealed that many more mouse brains have participated in this process, the decisions starting to merge much earlier than expected. Until now, the results are only correlational, which means that scientists still do not know if not all regions contribute, but they plan to attack this question as the next step in their work.
Discover more news on health
– Diagnostic dilemma: severe knee pain of the woman reveals “gold sons” in her joints
– Pieces of old virus represent 40% of our genome. They could trigger cerebral degeneration.
– Finally, we have an idea of the way in which the life supply of eggs develops in primates
The little mysteries of life
Think of the animal with the most sharp ears in the world and your mind could float on bats. Go further and one of their prey – the largest wax butterfly – could also be a competitor, because the butterfly ears are suitable for anticipating the ultrasonic chirpers of their knowing hunters.
But like any meaning refined by natural selection, which is considered the best hearing is in the ear of the listener. Here are our main contenders for the The best listeners in the animal world.
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Doubts for prevention of suicide from the chatbot
A new study has raised doubts about suicide prevention guarantees of three popular artificial intelligence chatbots (Openai Chatpt, the Claude of Google and Anthropic) incoherent in their responses to a measure where it could lead to serious damage.
The news came the same day as the parents of Adam Raine, 16, filed a complaint against Openai, saying that the company’s chatbot had trained California’s boy to take his life earlier this year.
The new study revealed that Chatgpt has offered direct answers to high -risk questions 78% of the time – some live scientists found the chatbot independently responded directly.
All of this raises pressing questions about how a growing number of people, much younger, are counting more and more about these robots to get advice on their mental health and personal life.
Discover more technological news
– There are 32 different ways of becoming thugs, say scientists – mind -blowing responses to a completely disalculation with humanity
– AI cannot solve these puzzles which only take humans only a few seconds
– Scientists have taught a “robot dog” powered by AI how to play badminton against humans – and it’s really good
Also in new scientists this week
– Dozens of mysterious blobs discovered inside Mars may be the remains of “failed planets”
– How the racist study of the skulls seized the scientists of Victorian Britain
– The asteroid the size of a newly discovered Zooma bus will do its doors today – and will not be exactly for 100 years
Scientific projector
A floating telescope of $ 10 billion, forming its cutting -edge objective in remote worlds to search for extraterrestrial life: the search for foreigners of humanity has traveled a long way from the first suggestions that we simply ignore large fires and await the arrival of spaceships, but that we can The James Webb space telescope really finds what we are looking for?
Under the scientific spotlights of this week, we dig in the search for the telescope signs of habitable worlds beyond our solar system, including the scientific debate engulfing the 120 K2-18B 120 years old. The only thing on which scientists can get along is that the planet probably feels sweet cabbage, but that its spicy gases are the by-product of biological processes or not is very contested.
Something for the weekend
If you are looking for something to do during the weekend, here are some of the best polls, Skywatch guides and crosswords published this week.
– Do you think we should stop AI’s progress before it became a threat to our species? [Poll]
– Who will see the total lunar eclipse of the “blood moon” this weekend? [Skywatching]
Science in pictures
This grainy image and black and white broken by NASA lunar orbit 1 The first photo of our planet is taken from the moon. Going above the lunar horizon with the southern pole covered in the shadows, the photo is hardly the most impressive that humanity has taken our world from the surface of the moon. But it was a benchmark first and occurred entirely by accident, according to NASA.
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