Science & Health

Stem cell work is not universally illegal; it is regulated differently by research type, cell source, and country. Nonembryonic research is widely permitted, while embryonic ste...

Does high heat kill bacteria? Generally, yes—heat kills bacteria by damaging proteins and DNA—but effectiveness depends on temperature, exposure time, moisture, and the bact...

Magnification enlarges an image, while resolution determines how much fine detail can be distinguished; understanding both is essential for assessing imaging performance in micr...

The high-pitched mosquito sound most people hear comes primarily from female mosquitoes in flight. As wings beat rapidly—often hundreds of times per second—they create small...

Living under or near high-voltage power lines is common, and many people worry about possible health risks, property values, and safety. This guide explains what the science cur...

Adenosine is a molecule that accumulates in the brain during wakefulness, contributing to increasing sleep pressure and the sense of fatigue. As adenosine rises, it binds to ade...

Loss of all brain function, including brainstem activity, is incompatible with life. In practical terms, a human cannot survive without a functioning brain because the brain con...

Cannabis concentrates, commonly called dabs, have high potency and raise questions about whether dabs cause seizures. Seizures result from sudden, abnormal electrical activity i...

Calcium 2+, or Ca2+, is the essential mineral ion that serves as a critical intracellular and extracellular messenger, a structural component of bone and teeth, and a regulator...

An antibody is a Y-shaped protein produced by B cells of the immune system to identify and help neutralize foreign substances such as bacteria, viruses, fungi, and toxins. Each...