One of the big mysteries about dark matter particles is whether they interact with each other. We still don't know the exact nature of what dark matter is. Some models argue that dark matter only interacts gravitationally, ...
Astronomy
Apr 15, 2024
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An international team led by researchers at the University of Toronto has uncovered over 100 genes that are common to primate brains but have undergone evolutionary divergence only in humans—and which could be a source ...
Evolution
Dec 6, 2023
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585
While white women may speak of breaking through the "glass ceiling," for many Black women, it's more like a "concrete ceiling." Black women experience unique and formidable barriers in the workforce that are not only difficult ...
Social Sciences
Nov 10, 2023
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As the search for dark matter particles continues to yield nothing, astronomers continue to look at ways these elusive particles might be found. One general method is to look for evidence of dark matter particle decay. Although ...
Astronomy
Oct 2, 2023
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40
Stewart Coles is a professor of communication at the University of Illinois Urbana-Champaign. He also is the co-author of a recent study that examined political polarization in the context of social media users' support for ...
Social Sciences
Dec 8, 2022
0
0
Social media sites that show a white person sharing a message about racial justice are more likely to convince other white people of the benefits of the cause, but they also limit the visibility of Black activists.
Social Sciences
Dec 2, 2022
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48
A new survey shows Americans' view of the January 6 Capitol attack can be predicted by their opinions on social movements, such as Black Lives Matter, but not as much by someone's race or whether they own a gun except when ...
Social Sciences
Jul 11, 2022
0
12
It has taken a very long time, but environmental justice has moved to the center of the environmental policy agenda. Here in New York City, the environmental justice movement spent decades fighting the siting of the North ...
Environment
May 9, 2022
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11
Matter is built around quarks, forming the nuclei of the atoms and molecules. While there are six types of quarks, regular matter contains only two: up quarks and down quarks. Protons contain two ups and a down, while neutrons ...
Astronomy
Dec 14, 2020
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Being a late-riser suggests you could have more grey matter in your brain, a study from Brunel University London has shown.
Plants & Animals
Jun 11, 2020
0
954
White matter is one of the two components of the central nervous system and consists mostly of myelinated axons. White matter tissue of the freshly cut brain appears pinkish white to the naked eye because of myelin is composed largely of lipid and a few percent of capillaries. Its white color is due to its usual preservation in formaldehyde. A 20 year-old male has around 176,000 km of myelinated axons in his brain.
The other main component of the brain is grey matter (actually pinkish tan due to blood capillaries). A third colored component found in the brain that appears darker due to higher levels of melanin in dopaminergic neurons than its nearby areas is the substantia nigra.
This text uses material from Wikipedia, licensed under CC BY-SA
