SciGirls Elle and Meg scuba dive to protect the biodiversity of their favorite Catalina reefs.
Alejandra and her friends find out if teens can multitask as well as they think they can.
Meryl Streep and N. Scott Momaday narrate a look at the volcanic Jemez Mountains in New Mexico.
Dr. Daniel Amen shares simple steps to boost your brain to help you live longer and look younger.
Native American music may not conjure images of tubas, trumpets and John Phillip Sousa marches. Yet this vibrant musical tradition has been a part of Native American culture for more than 100 years.
Practical advice on enjoying a fun, affordable and culturally broadening trip to Europe is shared.
Some scientists claim the world didn't have a beginning. Some theologians think it didn't need one.
Philosophy enables analysis and provokes insight in order to examine questions about God.
A look at what sleeping and dreaming reveals about consciousness is highlighted.
The universe works because of deep physical laws. But what if the values of these laws changed?