Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. Each year, tens of millions of individuals in the United States suffer from ...

Some parts of the human body are in a state of constant regeneration. Liver cells, for example, are replaced every 300 to 500 days. Fingernails grow every day. But this aptitude rapidly declines when ...

Yellow crazy ants break the rules of reproduction. Every male ant contains separate populations of cells from two distinct genetic lineages, making them “chimeras,” researchers report in the April 7 ...

The yellow crazy ant, or Anoplolepis gracilipes, has the infamous distinction of being among the worst invasive species in the world. However, this is not the reason for which this particular ant is ...

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A few weeks ago, scientists reported successfully growing human cells in monkey embryos, paving the way for creating live human–monkey chimeras. For many, this could open the door to great medical ...

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