Cold Fusion mentioned in "Star Trek: Strange New Worlds S02E03"
"In Kirk’s timeline, Romulans destroy an experimental cold-fusion reactor, wiping out Toronto. In La’an’s, none of this happens. Time to save the reactor!"
Star Trek: Strange New Worlds Recap: Back From the Future
La’an gets a spotlight episode with a neat time-travel story mixed with fish-out-of-water comedy.
www.vulture.com
Spoiler:
They use an old watch with phosphor and crack the glas to use it as a Tritium detector