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How Astronomers Found Our Cosmic Address

The Milky Way turns out to be part of a massive supercluster of galaxies that forms one of the largest known structures in the universe. This discovery is only the beginning of a new effort to map the cosmos...

By Noam I. Libeskind and R. Brent Tully

A Shot against Cancer

Enhancing the body’s own immune system is leading to promising results in the battle against malignancy

By Karen Weintraub

A Vaccine for Cancer?

Targeting cancer cells using their own DNA could help eliminate tumors and prevent recurrences

By Beatriz M. Carreno and Elaine R. Mardis


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