This Week in Science

In an early online publication, James Thomson has derived human iPS cells using non-integrating episomal vectors. After removing the episome, his team was able to derive iPS cells that were free of vector and transgene sequences and that were similar to human embryonic stem cells.

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National Geographic reports that marine mammals have lost a gene that could make them more susceptible to organophosphate damage.

NPR reports on Human Cell Atlas Consortium's effort to catalog all the different cell types within the human body.

The Union of Concerned Scientists surveyed US government scientists about Trump Administration policies and more, Science reports.

In PNAS this week: history and genetic diversity of the scarlet macaw, approach for predicting human flu virus evolution, and more.