심장 건강엔 담배 단박에 끊는 게 좋다…천천히 줄이면 효과 없어 - 조선일보



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Scientists Warn: Granite Island’s Little Penguins Could Go Extinct in Just a Few Years – Human Activity Is to Blame - The Daily Galaxy --Great Discoveries Channel
What is ‘Kessler Syndrome’ — and why do some scientists think the space disaster scenario has already started? - CNN

Craving carbs? Blame an ancient gene. - Ars Technica
Astronauts face unique visual challenges at lunar south pole - Phys.org