Enlarge this image Canadian astronaut David Saint-Jacques has his blood sampled on board the International Space Station for an experiment that examines…
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Enlarge this image A combination vaccine against measles, mumps and rubella protects kids against all three illnesses with one shot. Courtney Perry/The…
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Enlarge this image Winter swimmers enjoyed an icy dip in Poland’s Garczyn lake last February. Recorded air temperature was around 14 degrees…
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Enlarge this image In addition to profound exhaustion that isn’t relieved with sleep, the illness now called ME/CFS includes flu-like symptoms, muscle…
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Enlarge this image In addition to profound exhaustion that isn’t relieved with sleep, the illness now called ME/CFS includes flu-like symptoms, muscle…
