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Explore a room with a Mars view

(Phys.org) -- On the evening of Sunday, Aug. 5, the focal point of Martian activity here on Earth will be located in the Mission Support Area in Building 230 at NASA's Jet Propulsion Laboratory in Pasadena, Calif. From this facility will come news of the progress of NASA's Curiosity Mars rover's landing.

Heart muscle cell grafts suppress arrhythmias after heart attacks in animal study

Researchers have made a major advance in efforts to regenerate damaged hearts. Grafts of human heart muscle cells reduced the incidence of irregular heart rhythms after heart attacks in animal studies. Grown from embryonic stem cells, the grafted cells couple electrically and contract in sync with the heart's own muscle. The results offer evidence that human heart muscle cell grafts meet...