Lungs 101 National Geographic

Summary

How does the human body work? What roles do the digestive, reproductive, and other systems play? Learn about human ... The human heart beats up to 3 billion times over an average lifespan. Learn about the anatomy of the heart and how this muscular ... Los pulmones reponen el oxígeno fundamental para el cuerpo. Descubre la anatomía de los pulmones, cómo posibilitan la ... What is air pollution? Learn how greenhouse gasses, smog, and toxic pollutants effect climate change, and human health. The influenza virus is an recurring nightmare, killing thousands of people each year. Learn how the virus attacks its host, why it's ... What is cancer, and how does it start? Find out how genetics play a role, which types of cancer are the most prevalent, and what is ... Ebola is a rare, but extremely dangerous disease. Find out how many strains of Ebola exist, how the Ebola virus attacks its host, ... While customs and traditions involving pregnancy vary worldwide, the developmental process is essentially universal. Find out ... Lithium makes up only 0.002% of the Earth's crust, but has become a major component of technology and industry. Find out about ... NOTE: We erroneously mentioned that the source of carbon dioxide was diffusion instead of cell respiration. This is incorrect. Invasive species cost the global economy over a trillion dollars each year. Find out how these non-native organisms are ... In this animation, the respiratory organs of humans, such as the