Explore questions from across science through evidence, mechanisms, limitations, and the explanations behind familiar claims.
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Adrenal insufficiency is a life-threatening hormone deficiency in which the adrenal glands cannot produce enough cortisol, and sometimes too little aldosterone, so the body loses its ability to maintain blood pressure, blood glucose, and…
Read the story ↗Anthony Fauci’s role with AZT during the AIDS crisis was that of a clinical architect and bureaucratic broker, not the drug’s inventor.
Yes, camels and llamas are close relatives: both belong to the mammalian family Camelidae, the only living family in the suborder Tylopoda, and they share a common ancestor that lived in North America roughly 40 to 45 million years ago.
Yes, betta fish are aggressive, but not in the way most owners assume: male Siamese fighting fish (Betta splendens) are intensely territorial toward other males and toward anything that resembles a rival male, while females and juveniles…
Are eggs bad for chronic kidney disease? For most people with CKD, no — eggs are one of the better protein choices, not a forbidden food.
Yes, by most ecological scorecards, the domestic cat (Felis catus) is the most damaging invasive predator on Earth.
Baby brown recluses are venomous from the moment they hatch, but they are far less dangerous to humans than mature females.
Activated charcoal and regular charcoal are chemically the same material, but activated charcoal has been processed to open millions of microscopic pores, raising its internal surface area from roughly 50 square meters per gram to between…
Are buckthorn berries edible? It depends entirely on which buckthorn you mean, and that ambiguity is why so many foragers get sick.
Yes, boiled eggs are good for pregnancy when they are cooked until both yolk and white are fully firm, which eliminates the Salmonella risk that makes raw or runny eggs unsafe.
Compression socks can help a fractured foot, but only after the fracture has been stabilized and initial swelling has peaked, typically 3 to 10 days after injury.
Anorexia nervosa causes lasting damage long after weight normalizes, because the body prioritizes survival over structural repair for months to years.
Achondroplasia and hypochondroplasia are both caused by activating mutations in the FGFR3 gene, but they differ in severity, timing, and clinical impact.
Yes, abdominal aortic aneurysms (AAAs) are partly hereditary.
Glycine metabolism is the network of reactions that synthesizes, interconverts, and consumes the simplest amino acid, glycine (C₂H₅NO₂), which serves simultaneously as a protein building block, a one-carbon donor, a glutathione precursor,…
Are grapes hard to digest? For most people, no. Grapes are roughly 80 to 85 percent water, low in fat, and low in total fiber at about 0.9 grams per 100 grams, so they clear the stomach in 30 to 60 minutes and rarely trigger mechanical…
Yes — Class C extinguishing agents are applied manually. Every listed Class C agent, whether carbon dioxide, clean-agent halon replacements, or dry chemical blends, is discharged by a trained person operating a hand-portable extinguisher,…
Electronic medical records are not directly required by federal law for most clinicians, but the practical mandate is near-total.
Are complex cysts cancerous? Most are not. A complex cyst means the fluid pocket has internal features — thick walls, septations, or solid components — that make it look different from a simple cyst on imaging.
Dust worms are not dangerous to humans. They cannot bite, sting, or burrow into skin, and they carry no venom, no stinger, and no disease-transmitting mouthparts.
No, not all babies are born with blue eyes. Roughly 50 to 80 percent of newborns of Northern European ancestry start with blue or blue-gray eyes, while most babies of African, Asian, and Hispanic ancestry are born with brown eyes from the…
Yes. Jaguars are generally bigger than leopards in mass, head size, and shoulder bulk, though the gap depends on sex and region. Adult jaguars commonly weigh 100–265 lb, with Pantanal males reaching 300 lb.
Yes, cosmos are good for pollinators, with one important caveat: they are reliable nectar and pollen sources for short-tongued generalist insects, but they are not larval host plants and they do not replace native habitat.
A peace lily (Spathiphyllum) does not cause a true allergic reaction in most people.
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