In this issue, we highlight some of the milestones in the journey to understand how DNA functions; Paul Nurse, a ‘yeast man’, shares his personal trip through nature and its challenges; and Evelyn Witkin turns 100.

Marshall Nirenberg

From Messy Glob to Driving Force: How Understanding DNA Revolutionized Biology

Read about the scientists who elucidated the secrets of the double helix.

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Paul Nurse

Studying Yeast to Crack the Code of the Cell Cycle

Learn how Paul Nurse defined the genes involved in the regulation of the lives of cells.

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Evelyn Witkin

Celebrating the 100th Birthday of a Great Scientist

Is an unquenchable joy in science the secret to longevity?

As a graduate student, Evelyn Witkin jumped up and down with excitement when she found out that bacteria have genes. She went on to spend over half a century studying bacterial genetics, and this month, she turned 100.

Read about the discoveries that earned Witkin a 2015 Lasker Award, view an extended interview in which she discusses her life in science, and see a New York Times profile on her.

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