As others have pointed out, the phys.org link is quite vague. I went to the cited article at https://www.pnas.org/doi/10.1073/pnas.2214513119 https://www.pnas.

As others have pointed out, the phys.org link is quite vague. I went to the cited article at https://www.pnas.org/doi/10.1073/pnas.2214513119 https://www.pnas.org/doi/10.1073/pnas.2214513119, but there is a paywall. Yet another tedious paywall. It's too early in my day for that. But at least the pnas page has a link that gets you to a PDF of supplemental material from that site, which might be of help to those who would like to know about the Hg compounds in question here. I do wish the phys.org article had chosen to feature the word "compounds" in the title, and perhaps also the word "transform" instead of "remove". But that wouldn't be as eye-catching, and it seems that phys.org is all about catching eyes, lately.