Stem Cells Treat Baldness
Evidence that neogenesis—spontaneous regrowth of hair in dormant follicles—is widespread in the animal world has spurred researchers around the globe to look for genetic solutions for baldness.
What’s the Latest Development?
A group of Yale scientists recently used a stem cell procedure to stimulate the growth of hair in mice whose follicles had become dormant. The experiment was encouraged by evidence that spontaneous hair regrowth, known as neogenisis, is common in nature. "Basing its studies on mice incapable of producing fat cells, the Yale group injected adipose precursor cells from healthy mice into the defective ones. ... Two weeks after the injection, 86% of the dormant follicles were sprouting hair."
What’s the Big Idea?
Only three in seven men make it to old age with all their hair intact. And while numerous treatments exist to treat male-pattern baldness, they typically carry side effects that outweigh the drugs' benefits. So why do more men go bald than women? "Because the genes that promote baldness are recessive...both of a woman's X-chromosomes would need to have a set of defective genes in order to express the typical pattern of male baldness. That would be most unlikely. Men, however, have but a single X-chromosome in their cell nuclei, so such masking is not possible."
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In his final years, Martin Luther King, Jr. become increasingly focused on the problem of poverty in America.
- Despite being widely known for his leadership role in the American civil rights movement, Martin Luther King, Jr. also played a central role in organizing the Poor People's Campaign of 1968.
- The campaign was one of the first to demand a guaranteed income for all poor families in America.
- Today, the idea of a universal basic income is increasingly popular, and King's arguments in support of the policy still make a good case some 50 years later.
A completely unexpected discovery beneath the ice.
- Scientists find remains of a tardigrade and crustaceans in a deep, frozen Antarctic lake.
- The creatures' origin is unknown, and further study is ongoing.
- Biology speaks up about Antarctica's history.
For Damien Echols, tattoos are part of his existential armor.
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- This is why he began tattooing things that are meaningful to him — to carry a "suit of armor" made up the images of the people and objects that have significance to him, from his friends to talismans.
- Echols believes that all places are imbued with divinity: "If you interact with New York City as if there's an intelligence behind... then it will behave towards you the same way."
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