Denomy leads the first rescue into sadr city under heavy fire. See the top submissions to the national geographic photo contest and explore all the stunning entries.
Hear about the threats that could collapse krill populations.
Find out why these tiny animals have enormous importance in the ocean's food chain. Play games, watch videos, learn about animals, and places, and get fun facts on the national geographic kids website. The national geographic society is a global nonprofit organization committed to exploring and protecting our planet. See the winning photos from the national geographic travel photographer of the year.