Lonnie Thompson discusses clues to Earth's ancient climate history that are stored in tropical glacial ice.

Kyle Siler discusses the role of editors as gatekeepers at scientific journals.

Alán Aspuru-Guzik discusses how he uses supercomputing as a "molecular spaceship" to explore chemical space and discover potentially useful new molecules.

Keith Joung and Feng Zhang explain methods for editing sequences of DNA in living cells.

Veronica Vieland discusses a common disconnect between scientists and statisticians in evaluating scientific evidence.

Robin Ali describes efforts to transplant healthy rod and cone cells into afflicted retinas.

Hesham Sadek explains the regenerative capability of newborn mouse hearts.

Ambassador Deborah Birx discusses international efforts in the fight against HIV/AIDS.

Elaine Mardis discusses how next generation sequencing technology is helping the Pan-Cancer Initiative gain a molecular understanding of cancer.

David Schaffer describes how to culture human stem cells in a fully-defined, scalable 3D medium.