hydrogren sulfide and longevity

I haven't quite wrapped my brain around this story about dosing nematodes and mice with hydrogen sulfide to increase their life spans. If it induces hibernation, and this is what leads to longevity, is this hydrogen sulfide fix only useful for purposes such as space travel, or is there a better means to have it affect metabolism.

defending science fiction yet again

My favorite bit of this article about how unloved science fiction is this:

The literary snobs will say it’s badly written, which most of it is. So is most “literary” fiction. Badly written literary fiction is, however, wholly unnecessary. There’s a lot of badly written SF that is driven by an urgent journalistic desire to communicate. That is necessary.

Othwerwise, it's preaching to the choir, although i didn't know that story about Salman Rushdie and Grimus.

As often as i have sneered about American slavish obsession with "realism," perhaps it's certain species of formalism masquerading as realism which is really what pisses me off.