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When assisting conception with in vitro fertilisation, embryologists need to achieve a delicate balance: transfer too many healthy embryos, and a woman faces the potential danger of twins or triplets; transfer too few, and a woman risks having to repeat the process or not having a child at all. Human fertilisation, as it turns out, is an uncertain process both inside and outside of fertility clinics. This video from KQED San Francisco’s science documentary series Deep Look shows how researchers are getting closer to making in vitro fertilisation a more precise science.
Producer: Gabriela Quirós
Building ‘bigger and better’ has pushed cosmology forward. Can it take it any further?
Watch the elegant flow of a sheep herd, seen from the sky above Israel
How would a piano sound on Mars? Embark on an interplanetary sonic journey
Design and fashion
Gear up for a stylish celebration of vintage motorcycle design
An ode to the humble rotifer – one of nature’s simplest and strangest creatures
Check in to the Hilbert Hotel, and learn why some infinities are bigger than others
Cognition and intelligence
How a ‘periodic table’ of animal intelligence could help to root out human bias
The city as an emergent life form, with architecture as the skeleton and roads as veins
How sky-high dreams launched one man’s audacious life in homemade rocketry