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Yesterday โ€” 20 April 2025Latest Science News -- ScienceDaily

Throwing a 'spanner in the works' of our cells' machinery could help fight cancer, fatty liver disease... and hair loss

19 April 2025 at 03:55
Fifty years since its discovery, scientists have finally worked out how a molecular machine found in mitochondria, the 'powerhouses' of our cells, allows us to make the fuel we need from sugars, a process vital to all life on Earth. Scientists have worked out the structure of this machine and shown how it operates like the lock on a canal to transport pyruvate -- a molecule generated in the body from the breakdown of sugars -- into our mitochondria.

Unlocking the genetic basis of adaptive evolution: study reveals complex chromosomal rearrangements in a stick insect

19 April 2025 at 03:55
Scientists report adaptive divergence in cryptic color pattern is underlain by two distinct, complex chromosomal rearrangements, where millions of bases of DNA were flipped backwards and moved from one part of a chromosome to another, independently in populations of stick insects on different mountains.

Nonalcoholic beer yeasts evaluated for fermentation activity, flavor profiles

18 April 2025 at 15:30
Food scientists evaluated 11 commercially available yeast strains to identify their strengths based on chemical analysis and sensory panel opinions. Most of the yeasts that were tested are strains that have been developed or screened to not ferment maltose, the primary sugar created from malted barley in the beer-making process.

Integrative approach reveals promising candidates for Alzheimer's disease risk factors or targets for therapeutic intervention

18 April 2025 at 15:29
A new study provides solutions to the pressing need to identify factors that influence Alzheimer's disease (AD) risk or resistance while providing an avenue to explore potential biological markers and therapeutic targets. The researchers integrated computational and functional approaches that enabled them to identify not only specific genes whose alterations predicted increased AD risk in humans and behavioral impairments in AD fruit fly models but also showed that reversing the gene changes has a neuroprotective effect in living organisms.

Early-life exposure to air and light pollution linked to increased risk of pediatric thyroid cancer

18 April 2025 at 15:29
A new study suggests that early-life exposure to two widespread environmental pollutants -- small particle air pollution and outdoor artificial light at night -- could increase the risk of pediatric thyroid cancer. The study found a 'significant association' between exposure to ambient fine particulate matter air pollution (PM2.5) and outdoor artificial light at night (O-ALAN) and increased risk of papillary thyroid cancer in children and young adults up to 19 years old. The exposures occurred during the perinatal stage of life, typically defined as the time from when pregnancy occurs up to a year after birth.

Environmental variability promotes the evolution of cooperation among humans: A simulation-based analysis

18 April 2025 at 15:28
Researchers have demonstrated that intensified environmental variability (EV) can promote the evolution of cooperation through simulation based on evolutionary game theory. This result offers a new perspective for the reinterpretation of the variability selection hypothesis (VSH), which attributes improvement in human cognitive abilities to severe EV in Africa during the Middle Stone Age (MSA), as further relevant to the explanation of the evolution of sociality.
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