Health

What young adults can do to prevent heart attacks and strokes

Clogged arteries—which can lead to heart attacks and strokes—can begin to develop in young adulthood. But a new study suggests it may be less likely to happen to those who better adhere to a set of lifestyle behaviors ...

Psychology & Psychiatry

Fewer U.S. teen girls are reporting 'persistent sadness'

There's a hint of good news for parents concerned about teen mental health: After 57% of U.S. teen girls surveyed in 2021 said they felt "persistent sadness," that number declined somewhat by 2023, to 53%, new government ...

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Black

Black is the color of objects that do not emit or reflect light in any part of the visible spectrum; they absorb all such frequencies of light. Although black is sometimes described as an "achromatic", or hueless, color, in practice it can be considered a color, as in expressions like "black cat" or "black paint".

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