[asdff]

They have gotten it to work, but they are expanding trials "over the next 5 years" in the article, which means they aren't going to publish those results until 2022 at the earliest after those 5 years. You don't get published in Nature because you didn't get it to work.

[Retric]

You can get published in nature for doing something that doesn’t solve the problem. Just look at all that cancer research.

[asdff]

Which has lead to many cancers having much better outcomes than two decades ago.