Machu Picchu 101 | National Geographic
AdultsNatureTravelWorld...Machu Picchu is a testament to the power and ingenuity of the Inca empire. Built without the use of mortar, metal tools, or the wheel, Machu Picchu stands as an archaeological wonder of the ancient world. But why was it built—and deserted?
What Is Ocean Stratification?
YouthEnvironmentNatureScience...The ocean has layers that mix—sometimes. What are the layers made of? And why is it bad news when they don’t?
Plants In Space!
YouthExperimentsNatureScience...Dr. Anna-Lisa Paul and Dr. Robert J. Ferl put weeds in unique situations to study their behaviour on a molecular level.
How Many Animal Species Are There, Really?
YouthAnimalsEnvironmentFacts...It's harder than you might think to know how many animal species live on Earth.
The Future of Machines That Move like Animals | Robert Katzschmann | TED
AdultsExperimentsLifeTechnology...Imagine a boat that propels by moving its "tail" from side to side, just like a fish. That's the kind of machine that TED Fellow Robert Katzschmann's lab builds: soft-bodied robots that imitate natural movements with artificial, silent muscles.
Anteater Rescue
KidsAnimalsEnvironmentNatureA tiny baby anteater fell from the tree where he was sleeping, and animal rescuers can't find his mom anywhere in sight.
4 Plants that Hunt Underground
AdultsEnvironmentLifeNature...Carnivorous plants tend to live in environments where the soil can’t provide enough of the nutrients they need to survive, so they have developed all sorts of methods to trap and consume the critters of the area, including hunting underground!
Mississippi River From Space
YouthTechnologyWorldScience...This week's edition features radar images of the Mississippi River, one of the longest rivers in North America.