Post navigation This biological study identified how the manganese biogeochemical cycle interacts with the global carbon cycle, and found that the availability of manganese seems to be limited by plant photosynthesis across the world’s oceans. By better understanding the roles played by manganese in the biosphere, this research provides valuable insight into global climate change. NASA is conducting tests to make sure their new spacecraft, Artemis II, is safe to return to Earth successfully. This includes simulations of the capsule in a variety of potential scenarios as it re-enters Earth’s atmosphere. Ultimately, these extensive tests will ensure the crew and the capsule arrive back home safely.