Digging deeper, the researchers identified specific changes that occur in the composition of the gut microbiome of mice as they age. In particular, the relative abundance of a bacteria called Parabacteroides goldsteinii increases in old mice and is directly associated with cognitive decline in the animals. They showed that colonizing the guts of young mice with this bacterial species inhibited their performance on the object recognition and maze escape tasks, and that this deficit correlated with a reduction of activity in the hippocampus.
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Climate Physicists Face the Ghosts in Their Machines: Clouds
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Some high-end cordless vacuums come with auto-empty bases that act much like those included with expensive robot vacuums. After cleaning and returning the vacuum to the base, it will automatically empty the dustbin into a larger dustbin that you can then detach from the base when you need to empty it. This is great for anyone concerned about allergens, as you’ll only need to empty the larger dustbin every month or two, reducing your contact with dust and debris.