Earliest well-preserved tetrapod may never have left the water

Superbly preserved fossils from Russia cast new and surprising light on one of the earliest tetrapods — the group of animals that made the evolutionary transition from water to land and ultimately became the ancestors not just of amphibians, reptiles, birds and mammals, but of ourselves.

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High-salt diet promotes cognitive impairment through the Alzheimer-linked protein tau

Investigators sought to understand the series of events that occur between salt consumption and poor cognition and concluded that lowering salt intake and maintaining healthy blood vessels in the brain may 'stave off' dementia. Accumulation of tau deposits has been implicated in the development of Alzheimer's disease in humans.

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Creating a nanospace like no other

Researchers have built a self-assembled nanocage with a very unusual nanospace: Its walls are made of antiaromatic molecules, which are generally considered too unstable to work with. By overturning assumptions about the limits of nano-chemical engineering, the study creates an entirely new nanospace for scientists to explore. Nanometer-sized cavities are already finding a range of useful applications in chemistry, medicine and environmental science.

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