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By freezing your own healthy blood stem cells in your 20s, thawing them and undergoing a stem cell transplant in your 40s or 50s, it might be possible to rejuvenate your blood-forming and immune systems. Science fiction? At least it works when old mice receive healthy blood stem

Ice formation can damage biological samples, tissues and materials during freezing and thawing. In nature, specialized molecules known as ice-binding proteins prevent ice crystals from growing too large, helping organisms survive in extreme cold. Scientists have long tried to rep

In a Penn State lab, a small cylinder of soil sits wired with sensors, slowly cooling as it mimics conditions thousands of miles away.

Amid the peatlands of northern Sweden, billions of microbes are quietly rewriting their genetic playbooks—and doing so far more often than scientists realized.