When a couple can’t conceive, in-vitro fertilization (IVF) may help. But the hefty price tag limits its use to rich countries; it also suggests growing an egg outside the womb requires high-tech equipment. The Walking Egg Lab achieves the right incubation pH and temperature with just a basic cooler containing vials of citric acid and bicarbonate, cutting the cost of IVF by a factor of five to ten.
Like science, tech, and DIY projects?
Sign up to receive Popular Science's emails and get the highlights.LET'S GO