Placental development is the process through which the placenta, an essential organ that connects the developing fetus to the mother's uterine wall, forms and functions during pregnancy. This area of research explores the molecular and cellular mechanisms involved in the formation and maintenance of the placenta, as well as its role in supporting fetal growth and development. Researchers in this field study how disruptions in placental development can lead to pregnancy complications such as preeclampsia, fetal growth restriction, and preterm birth, and work to identify potential therapeutic strategies to improve maternal and fetal health outcomes. Understanding placental development is crucial for advancing our knowledge of pregnancy and reproductive health.