"Until we can separate these signals more clearly, we have to be especially careful not to misinterpret them as signs of life ...

But new research from the University of Chicago is urging caution. After analyzing data from multiple observations of the ...

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent ...

Persistent stress elevates cortisol, impacting well-being. High cortisol levels can weaken the immune system, raise blood ...

Smoking or eating marijuana on a regular basis may damage a healthy person's blood vessels much like tobacco does, a small ...

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