Animals renowned for their outstanding night vision include owls, cats, tarsiers (a tiny primate in Southeast Asia) — and even the dung beetle. But humans? Not so much. Over time, many people suffer from night blindness, also known as nyctalopia. This condition makes seeing in dim or dark settings difficult …
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Prostate cancer: Short-course radiation as effective as longer-term treatments
It used to be that radiation therapy for prostate cancer involved weeks or months of repeat visits to a clinic for treatment. Today that’s not necessarily true. Instead of giving small doses (called fractions) per session until the full plan is completed, radiation delivery is moving toward high-dose fractions that …