Category: Evolution in a nutshell
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The evolutionary line between health and illness
By Marta Koblańska, September 30, 2025, 17:50 Polish time, Photo: AI-generated neuronal structure, thanks to BrianPenny, Pixabay Differentiation in neuronal structure within the hypothalamus, as well as modifications in transmission and aggregation of certain molecules, may represent the boundary between health and illness, according to scientists in China. The structures in the brain, such as…
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Science-confirmed reason to welcome guests
By Marta Koblańska, August 22, 2025, 12:20 Poland’s time, photo: DNA’s clash, Placidplace, Pixabay The risk for a population to become extinct increases along with extended and intensified inbreeding, American scientists claim. Simultaneously, genetic diversity may be taken as an advantage. In ancient Egypt, inbreeding was seen as a method to preserve the population’s exceptional…
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Is male or female a weak sex?
by Marta Koblańska, July 26, 18:10, Photo: DNA, author TyliJura, Pixabay The relationship between the male sex code and the female body is unclear. However, a virtual degradation leads to a selective advantage, though this may be misleading, according to a study conducted by Austrian scientists. Sex determinants, namely the X and Y chromosomes, emerge…
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How and why does the hippocampus decline? Some facts
by Marta Koblańska, 16.07.2025, 16:30 Polish time Photo: Brain, Thanks to geralt, Pixabay Alzheimer’s disease, the most common neurodegenerative disorder globally, is often linked to atrophy of the hippocampus. However, a new study conducted by scientists at ShanghaiTech University has revealed that this decline may also be a result of the disease’s progression. Their findings…
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Rzeczywiste i iluzoryczne kontrowersje wokół ciąży
Zdjęcie: Zapłodnienie. Licencja TBIT, Pixabay Im cięższa jest wada genetyczna zarodka i późniejszego płodu, tym szybciej jest on eliminowany z organizmu kobiety. Lżejsze wady z reguły pozwalają na donoszenie ciąży, choć nie oznacza to, że dziecko przeżyje po urodzeniu – mówią eksperci z zakresu ginekologii i położnictwa oraz neonatologii. Organizm ludzki powstaje stopniowo, po połączeniu…