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Simple 3D-printed sperm-sorting device could help couples conceive
Designed to replicate the female reproductive tract, it incorporates a reservoir along the outside which is connected to a central collection well by intricate microfluidic channels
New discovery may make losing weight and keeping it off much easier
One of the most frustrating aspects for many is the yo-yo effect of calorie restriction, that sees dieters regain half of their lost pounds within two years