How one fern hoards toxic arsenic in its fronds and doesn’t die
Key proteins keep the heavy metal from wreaking havoc on the way to its cellular jail cell
![Pteris vittata ferns](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/06/053019_cw_fern_feat.jpg?fit=860%2C460&ssl=1)
HEAVY METAL HOARDER Pteris vittata ferns can sop up and store high levels of arsenic and survive. A set of newly identified genes helps explain how.
Rafael Medina/iNaturalist.org (CC BY-NC 4.0)