ScienceFriendly introductions to questions from across science. Start with something familiar, discover the explanation, and keep exploring.
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Yes, SKYN condoms are latex free. Every condom in the SKYN line is made from polyisoprene, a synthetic polymer that contains no natural rubber latex proteins, so it is safe for people with latex allergy.
Read the story ↗Yes, a yellow scab is usually supposed to be yellow. The yellow-tan color comes from dried serum, the clear fluid left behind after blood clots, mixed with fibrin and dead white blood cells.
Let's find outNo, sequoias and redwoods are not the same tree. They belong to three distinct species in three separate genera, all surviving in the family Cupressaceae.
Let's find outNo, schizophrenia and narcissistic personality disorder are separate conditions, and schizophrenia does not make a person narcissistic.
Let's find outAre Root Canals a Scam? No. A root canal is a legitimate dental procedure with a long track record, treating infection inside a tooth by removing damaged pulp, cleaning the canal system, and sealing it.
Let's find outYes, STDs are tested through urine, but only a specific subset: chlamydia, gonorrhea, trichomoniasis, and sometimes Mycoplasma genitalium are detectable on a urine nucleic acid amplification test (NAAT).
Let's find outYes — refrigerated probiotics are generally better than shelf-stable ones when live-cell delivery to the intestine is the goal, because cold storage slows the metabolic activity and moisture-driven degradation that reduce colony-forming…
Let's find outRingworm bald spots are usually reversible, not permanent. The fungus itself does not kill hair follicles; it invades the hair shaft and the skin around it, and hair typically regrows once effective antifungal treatment clears the…
Let's find outAre red bugs dangerous? For most people, no. The bright red bugs people call red bugs are usually red velvet mites or boxelder nymphs, and neither bites humans or transmits disease.
Let's find outNo — raccoons are not marsupials. Raccoons (Procyon lotor) are placental mammals in the order Carnivora, family Procyonidae, and they give birth to litters of three to seven young after a 63- to 65-day pregnancy.
Let's find outRice Crispy treats are not healthy in any meaningful nutritional sense — they are a near-pure carbohydrate food, delivering roughly 20 to 25 grams of sugar and 90 to 130 calories per 40-gram square with almost no protein, fiber, vitamins,…
Let's find outYes, refried beans are healthy for most people, with one major caveat: the canned version is often high in sodium, while the homemade version is not.
Let's find outAre RV fuses the same as car fuses? Mostly yes at the connector level, but they are not interchangeable as installed systems.
Let's find outYes, protein shakes are generally safe during pregnancy when they are used as a supplement to a balanced diet and not as a replacement for meals.
Let's find outYes, raisins are high in potassium. A standard quarter-cup serving (about 43 grams) delivers roughly 320 to 350 milligrams of potassium, which is more than 7 percent of the 4,700 mg daily target for adults.
Let's find outRaw chestnuts are not poisonous. The nuts sold as sweet chestnuts (Castanea sativa and its relatives) are safe to eat uncooked, and people have eaten them that way for millennia.
Let's find outRXBARs are moderately healthy for most people, but they are not a "clean" health food in the way their marketing implies.
Let's find outPsychedelics are not legal in Oregon in the way alcohol or cannabis are legal.
Let's find outAre rats cleaner than dogs? Measured by self-grooming frequency, rats are the more fastidious animal: a healthy rat grooms itself 20 to 40 times a day and spends roughly 30 to 40 percent of its waking time on coat care, while dogs groom…
Let's find outAre Pit Bulls inherently dangerous? No. The scientific consensus is that no dog breed is inherently dangerous; aggression is a product of genetics, early socialization, breeding for fighting, and environment acting together, not a fixed…
Let's find outYes, poison ivy's underground roots are dangerous, but not in the way most people assume.
Let's find outNo, premature ventricular contractions (PVCs) and supraventricular tachycardia (SVT) are not the same. A PVC is a single early heartbeat that starts in the ventricles and usually feels like one hard thump or a skipped beat.
Let's find outAre Portobello mushrooms dangerous to eat? No—not for the vast majority of people, when they are cooked and handled properly.
Let's find outYes, piercing bumps are normal, and they are one of the most common complications after body piercing.
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