Scientists reveal unprecedented insights into human limb development, including the many intricate processes that govern their formation. Human fingers and toes do not grow outward; instead, they form ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Each human is a ...

Human growth hormone is important in many aspects of growth and development. For children living with growth hormone deficiency, it can involve more than just physical growth differences. Cognitive ...

The average adult male has around 36 trillion cells in their body, while average adult females have 28 trillion, researchers have found. Unexpectedly, the mass of small cells in our bodies, such as ...

An overlooked vitamin might actually be one of the most important for every part of the body. Zinc is the second most abundant metal vitamin found in the body behind calcium, regulating metabolism, ...

Until Homo floresiensis was discovered, scientists assumed that the evolution of the human lineage was defined by bigger and ...