Low sperm motility reduces fertilization success and embryo quality in traditional and assisted conception. A research team used ultrasound waves as a form of mechanotherapy, which alters cell metabolic activity, to increase immotile sperm’s physical activity.1 They investigated this approach at a single cell level using microfluidics.2
Illustrated by Ashleigh Campsall
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/d1/82/d18228f6-d319-4525-bb18-78b829f0791f/mammalevolution_web.jpg "How to Make a Mammal in Nine Evolutionary Steps")
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