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MIT neuroscientists discover the brain can reason without words

2 weeks 2 days ago
MIT neuroscientists have found striking evidence that language and logical reasoning are powered by separate systems in the brain. Even people with severe language impairments caused by stroke were able to solve challenging logic puzzles as well as people without those impairments, while brain scans showed that language-processing regions stayed largely quiet during reasoning tasks.

Marine heatwaves are harming human health in surprising ways

2 weeks 2 days ago
Marine heatwaves are emerging as a threat not just to coral reefs and fisheries, but to human health and well-being. Researchers warn that unusually hot oceans can fuel stronger storms, trigger harmful algal blooms, reduce seafood supplies, disrupt livelihoods, and contribute to anxiety, grief, and depression in coastal communities.

Immune surveillance and immune evasion of senescent cells

2 weeks 2 days ago
Senescence, which is defined as a state of stable cell cycle arrest, can occur in all tissues of the body. The surveillance and clearance of senescent cells by the immune system is necessary for tissue homeostasis; when this immune surveillance does not occur efficiently, for example, during tumorigenesis and ageing, it has pathological consequences. For example, if the immune clearance of senescent cells is evaded, such as through recruitment of immunosuppressive cells, expression of immune...
Pau Garcia-Baucells

TNFR1 signaling connects inflammation to impaired fatty acid oxidation to drive intestinal stem cell aging

2 weeks 2 days ago
Aging is characterized by a decline in function of intestinal stem cells (ISCs), but the extent to which this is shaped by systemic factors is unclear. Here we show that the ISC aging phenotype can be propagated from old to young mice utilizing heterochronic parabiosis, and implicate a role for inflammation in these effects, as anti-inflammatory drugs, including TNF antibodies, restored function. Parabiotic rescue experiments demonstrate that TNFR1 knockout protected young ISCs from the old...
Ruixuan Wang