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Welcome to the Science Podcast for August 4th, 2017.

I'm Sarah Crespi.

In this week's show, Inez Cuttle, talks about the biology of color, how we can learn about making, seeing, evolving, and moving colors. Mary Soon Lee is here with some elemental haiku, 119 poems drawn from the periodic table. And David Grimm gives us this

week's hits from the online news site. Now we have David Grimm, editor for our daily news site. He's here to talk about

some recent online stories. Welcome, Dave. Hi, Sarah. First up, we have a story on Alzheimer's

disease in chimps. Let's start out with this possibility that chimps, that chimpanzees actually get Alzheimer's.

Do they get Alzheimer's, Dave? And do other primates get Alzheimer's? Well, you need three things to be

considered having Alzheimer's. One is dementia. And the other two are sort of abnormalities in the brain.

One called amyloid plaques, which are these sort of sticky accumulations of misfolded proteins.

Another one called neurofibrillary tangles.

These are sort of formed when proteins call tau.

They clump into these long filaments, twist around each other.

So both of these are thought to cause damage to the cells in the brain.

And none of these things have all cause damage to the cells in the brain. And none of these

...