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• Past Issues

• Potent Promise: Essential Stemness: Scientists move closer to understanding the dual fates of embryonic stem cells — to divide or develop
• Potent Promise: Back to the Womb: Reverting adult cells to an embryonic state without creating embryos is a tricky business
• It’s Likely That Times Are Changing: A century ago, mathematician Hermann Minkowski famously merged space with time, establishing a new foundation for physics; 
today physicists are rethinking how the two should fit together
• This week's table of contents