What Planet Crashed Into Earth and Created the Moon
Billions of years ago, a Mars-sized planet called Theia slammed into early Earth, forming the Moon. Here's what scientists know about that ancient collision.
What Is a Fat Fast? How It Works and What to Eat
A fat fast is a short-term, high-fat eating approach used to break weight loss plateaus. Learn how it works, what to eat, and whether it's right for you.
Why Do I Feel Like I Have to Throw Up?
Nausea has many possible causes, from what you ate to stress or an inner ear issue. Learn what's likely behind that queasy feeling and what can help.
What Type of Genetic Mutation Causes Color Blindness?
Color blindness is usually caused by gene mutations on the X chromosome, which is why men are far more likely to be affected than women.
What Is Acoustic Sensing and How Does It Work?
Acoustic sensing uses sound waves to monitor health, detect leaks, and track environments. Here's how the technology works and where it's being applied.
What Is a Vug? Crystal-Lined Rock Cavities Explained
Vugs are small cavities in rock often lined with crystals. Learn how they form, what minerals grow inside, and why they matter in geology and energy production.
What to Do If Your Head Hurts in School
Headache at school? Simple steps like drinking water, adjusting posture, and resting your eyes can help you feel better fast.
What Is Foxing in Books? Causes, Value, and Removal
Foxing is those brown spots on old books. Learn what causes them, whether they hurt a book's value, and how to slow or remove them.
How to Stop Drinking Alcohol With Home Remedies
From kudzu root to urge surfing, these home remedies can support your effort to drink less — plus what to do when you need more help.
What Is Internal Medicine? Specialties and Training
Internal medicine doctors specialize in adult care and complex conditions. Learn what they do, how they train, and how they differ from family medicine.