Kara Rogers

madison, wisconsin, united states

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Senior editor covering genetics, cell biology, human disease, and other biomedical content for Britannica. Freelance health and science writer and editor, and freelance technical editor. Author of The Quiet Extinction: Stories of North America's Rare and Threatened Plants (The University of Arizona Press, 2015) and Out of Nature: Why Drugs from Plants Matter to the Future of Humanity (The University of Arizona Press, 2012).

Featured Articles

Why Does Blood Taste Like Metal? | Iron, Hemoglobin, Taste Bud, Olfaction, & Facts

Why Does Blood Taste Like Metal? Blood is often described as having a metallic taste because it contains a large amount of iron, mainly within hemoglobin, the oxygen-carrying protein in red blood cells. When iron in hemoglobin reacts with air or lipids on... See more

britannica.com•Kara Rogers•Jan 12, 2026

What Is the Most Potent Opioid? | Fentanyl, Carfentanil, Sufentanil, Nitazene, Uses, Potency, & Facts

What Is the Most Potent Opioid? The most potent opioid is generally considered to be carfentanil, which is used in veterinary medicine, primarily to tranquilize elephants and other large mammals. Although some formulations of the illicit opioid nitazene c... See more

britannica.com•Kara Rogers•Dec 18, 2025

Does Eating Turkey Make You Sleepy? | Myth vs. Reality, Thanksgiving Day, Tryptophan, & Facts

Does Eating Turkey Make You Sleepy? Our editors will review what you’ve submitted and determine whether to revise the article. Contrary to popular belief, eating turkey itself does not cause drowsiness. The sleepiness that is often felt after a big turkey... See more

britannica.com•Kara Rogers•Nov 25, 2025

History of the AIDS Crisis: A Timeline | Emergence, AZT, World AIDS Day, PrEP, PEPFAR, UNAIDS, HAART, Prevention, & Facts

History of the AIDS Crisis: A Timeline Our editors will review what you’ve submitted and determine whether to revise the article. The AIDS crisis emerged in the early 1980s as a mysterious and terrifying disease that affected various communities and defie... See more

britannica.com•Kara Rogers•Nov 13, 2025

History of Public Health: A Timeline | Human Disease, Sanitation, Germ Theory, Antibiotic Revolution, Vaccines, & Facts

History of Public Health: A Timeline verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation St... See more

britannica.com•Kara Rogers•Oct 15, 2025

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Bachelor Of Science, Biology at Midway UniversityGraduated: 2001

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Kara Rogers

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Featured Articles

Why Does Blood Taste Like Metal? | Iron, Hemoglobin, Taste Bud, Olfaction, & Facts

What Is the Most Potent Opioid? | Fentanyl, Carfentanil, Sufentanil, Nitazene, Uses, Potency, & Facts

Does Eating Turkey Make You Sleepy? | Myth vs. Reality, Thanksgiving Day, Tryptophan, & Facts

History of the AIDS Crisis: A Timeline | Emergence, AZT, World AIDS Day, PrEP, PEPFAR, UNAIDS, HAART, Prevention, & Facts

History of Public Health: A Timeline | Human Disease, Sanitation, Germ Theory, Antibiotic Revolution, Vaccines, & Facts

Is this you?

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Featured Articles

Why Does Blood Taste Like Metal? | Iron, Hemoglobin, Taste Bud, Olfaction, & Facts

What Is the Most Potent Opioid? | Fentanyl, Carfentanil, Sufentanil, Nitazene, Uses, Potency, & Facts

Does Eating Turkey Make You Sleepy? | Myth vs. Reality, Thanksgiving Day, Tryptophan, & Facts

History of the AIDS Crisis: A Timeline | Emergence, AZT, World AIDS Day, PrEP, PEPFAR, UNAIDS, HAART, Prevention, & Facts

History of Public Health: A Timeline | Human Disease, Sanitation, Germ Theory, Antibiotic Revolution, Vaccines, & Facts

Education