ALICE analyzed non-head-on lead–lead collisions and compared the elliptic flow of D mesons produced right after the collisions ("prompt" D mesons) with that of those that are produced later in the decays of B mesons ("non-prompt" D mesons).

Source: https://phys.org/news/2023-12-alice-dynamics-charm-beauty-particles.html

In order for there to be an afterlife, he holds, human consciousness would have to be something that is entirely separated from our physical body, which indeed decays and dies.

Source: https://greekreporter.com/2023/05/24/life-after-death/

The proportion of the radioactive carbon-14 isotope that is absorbed by living organisms into their tissue decays over time, which allows scientists to determine the approximate year of death of the specimen.

Source: https://gazette.com/news/us-world/exclusive-a-close-encounter-with-the-alien-bodies-in-mexico/article_25ffd68d-0160-59d6-88b5-4ad728e29339.html

Tritium is a hydrogen isotope in the water molecule, but it decays to a helium isotope, not to hydrogen.

Source: https://japantoday.com/category/politics/japanese-ministers-eat-fukushima-fish-to-show-it%27s-safe-after-nuclear-plant-wastewater-is-discharged