Ivuna is an administrative ward in the Mbozi District of the Mbeya Region of Tanzania.
Since 1997, Richard B. Hoover has published numerous papers in scientific conference proceedings and in peer-reviewed scientific journal articles and book chapters describing controversial evidence and claims for the existence of indigenous microfossils of cyanobacteria and other filamentous prokaryotes in the CI1 (Ivuna and Orgueil) and CM2 (Murchison and Murray) carbonaceous meteorites.