Infertility affects 1 in 8 couples worldwide. But in the last 40 years, more than 5 million babies have been born using in vitro fertilization (IVF). How does it work? Nassim Assefi and Brian A. Levine detail the science behind making a baby in a lab.

https://www.ted.com/talks/nassim_assefi_and_brian_a_levine_how_in_vitro_fertilization_ivf_works