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Unusually obstructive plumage compromises the vision of two types of pheasants—a first in birds

Bats could form a bridge between marine and terrestrial mammals, scientists say

Science, Volume 390, Issue 6777, Page 965-965, December 2025.

Parkinson's disease is a neurodegenerative condition, marked by a progressive deterioration in both motor and non-motor abilities, which can severely affect the quality of life of the elderly population. With no cure available, innovative tools in treatment development and drug discovery are necessary. For several years, traditional models have been essential; however, they face limitations in replicating the complex setting of Parkinson's disease. In this regard, in silico and in vitro models...

Alzheimer's disease, the leading cause of dementia in the elderly, is a neurodegenerative disorder that has been studied to uncover therapeutic pathways through its molecular and cellular hallmarks. Here, we present a comprehensive investigation of cellular heterogeneity from the temporal cortex region of 40 individuals, comprising healthy donors and individuals with differing AD pathology. Using single-nucleus transcriptomic analysis of 430,271 nuclei from both gray and white matter of these...

The elimination of senescent cells can enhance the osteointegration of implants in elderly patients. However, achieving specific clearance of senescent cells without adversely affecting the function of normal cells remains challenging. Here we show an implant surface modification technique to achieve specific clearance of locally senescent cells by modulating their metabolism. Our method involve modifying implants with BPTES, a glutaminase 1 (GLS1) inhibitor, through π-π stacking with dopamine....

While coastal renewable energy-powered seawater electrolysis is highly promising for green H(2) production, the anodic chemical corrosion by aggressive chlorine chemistry and violent bubble release-induced physical damage to anodes are two long-standing issues that lead to inferior stability. Here we pursue integrating triple protection to a monolithic catalyst to concurrently alleviate chlorine chemistry and weaken external forces from bubble escaping/collapsing. The 1^(st) and 2^(nd) defenses...

As a powerful oxidant, atomic oxygen (O) holds considerable promise for a variety of biomedical and industrial applications. However, the inability to quantify solvated oxygen atoms has prevented the determination of the fundamental parameters governing its behaviour in relevant aqueous environments. Here, we directly image ground-state oxygen atoms in water using femtosecond two-photon absorption laser-induced fluorescence. Measurements show that oxygen atoms persist for tens of microseconds in...

Mammalian maximum lifespan (MLS) varies over a hundred-fold, yet the molecular mechanisms underlying this diversity remain unclear. We present a cross-species analysis of alternative splicing (AS) across six tissues in 26 mammals, identifying hundreds of conserved AS events significantly associated with MLS, with the brain containing twice as many tissue-specific events as peripheral tissues. MLS-AS events are enriched in pathways related to mRNA processing, stress response, neuronal functions,...

Age-associated decline in tissue NAD^(+) levels contribute to functional impairments, recognized as aging. Nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme crucial for NAD^(+) biosynthesis in mammals, is encapsulated in extracellular vesicles (EVs) and secreted into the bloodstream. The importance of extracellular NAMPT-containing EVs (eNAMPT-EVs) in hypothalamic NAD^(+) biosynthesis has been demonstrated in several mouse models. However, whether eNAMPT-EVs derived from...

Skeletal muscle is essential for movement, respiration, and metabolism, with mTORC1 acting as a key regulator of protein synthesis and degradation. In aging muscle, mTORC1 becomes overactivated, contributing to sarcopenia, though the mechanisms remain unclear. Here, we identify DEAF1, a FOXO-regulated transcription factor, as a key upstream driver of mTORC1 in aged muscle. Elevated Deaf1 expression increases mTOR transcription, leading to heightened mTORC1 activity, impaired proteostasis, and...