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New Tactics in the Fight against Tuberculosis

The pandemic is growing in many places, and strains resistant to all existing drugs are emerging. To fight back, biologists are applying a host of cutting-edge drug development strategies...

By Clifton E. Barry III and Maija S. Cheung

Advances in Monitoring Nuclear Weapon Testing

Detecting a test of a nuclear weapon has become so effective and reliable that no nation could expect to get away with secretly exploding a device having military significance

By Paul G. Richards and Won-Young Kim

How to Save New Brain Cells

Fresh neurons arise in the adult brain every day. New research suggests that the cells ultimately help with learning complex tasks—and the more they are challenged, the more they flourish...

By Tracey J. Shors


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