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Decode Stela 3
"Read" Maya hieroglyphs carved on an eighth-century stone monument, and hear them spoken aloud.
Time Line of Decipherment
Trace key discoveries in the effort to understand the Maya script.
Two Worlds
In this quiz, see how women in rich and poor countries face very different realities when it comes to childbearing and maternal health.
Anatomy of Childbirth
Review the three stages of having a baby as well as some of the risks women face.
Wind Tunnel Test
How did Microraptor use its second pair of wings to glide? See for yourself in this virtual experiment.
Built to Fly
Compare the anatomy of the oldest known bird and its dinosaur cousins.
Scenes From a Quarry
Detailed line drawings reveal the tools and techniques of ancient Greek craftsmen.
A Sense of Scale
Travel from absolute zero to what may be the highest temperature.
Spy Photos
A surveillance-image specialist examines photos of Iraq, North Korea, and other political hotspots.
MiG vs. Sabre Anatomy
Compare the two fighters—one Russian, one American—whose pilots dueled to the death over "MiG Alley."
