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Bone marrow stem cells suspended in X-ray-visible micro bubbles can be used to dramatically improve the body’s ability to build new blood vessels in the upper leg, scientists have found.
Physicists have developed the smallest electrically pumped laser ever, with a beam that is 30 micrometers long, eight micrometers high, and has a wavelength of 200 micrometers.
Julie Powell, author of Julie & Julia, writes in today’s Guardian that there is a light at the end of infidelity’s dark tunnel if partners are willing to overcome societal pressures to split.