Dense breast tissue is common and normal, but it can make cancer more difficult to detect. FDA requirements going into effect in September 2024 will dictate that patients be better informed about it.
Social disadvantage can cause stress that leads to changes in ‘connectivity’ between brain regions, potentially harming adolescents’ ability to plan, set goals, and self-reflect.
Despite its huge complexity, your brain directs its neural traffic in relatively straightforward ways when approaching cognitively demanding tasks such as puzzles.
Helium lifts balloons and makes our voices squeak. But its supply on Earth is finite and is critical for modern industrial processes and medical imaging in hospitals. How worried should we be?