Theoretically, in vitro fertilisation could be performed by collecting the contents from a woman's fallopian tubes or uterus after natural ovulation, mixing it with sperm, and reinserting the fertilised ova into the uterus.
Upstream operations deal primarily with the exploration stages of the oil and gas industry, with upstream firms taking the first steps to first locate, test and drill for oil and gas. Later, once reserves are proven, upstream firms will extract any oil and gas from the reserve.
Watch our short introductory video here: Upstream is a movement to create a healthy society through evidence-based, people-centred ideas. Upstream seeks to reframe public discourse around addressing the social determinants of health in order to build a healthier society. Scroll down to learn more. Why âupstreamâ?