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How did Earth avoid a Mars-like fate? Ancient rocks hold clues

Approximately 1,800 miles beneath our feet, swirling liquid iron in the Earth's outer core generates our planet's protective magnetic field. This magnetic field is invisible but is vital for life on Earth's surface because ...

Curiosity sees bizarre spikes on Mars

In August 2012, the Curiosity rover landed in the Gale Crater on Mars and began exploring the surface for indications of past life. The rover made some profound discoveries during that time, including evidence that the crater ...

Blood pressure e-tattoo promises continuous, mobile monitoring

Blood pressure is one of the most important indicators of heart health, but it's tough to frequently and reliably measure outside of a clinical setting. For decades, cuff-based devices that constrict around the arm to give ...

Scientists unlock the secrets of a sixth basic flavor

Japanese scientist Kikunae Ikeda first proposed umami as a basic taste—in addition to sweet, sour, salty and bitter—in the early 1900s. About eight decades later, the scientific community officially agreed with him.

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