Activating the vault discovered below Eos' surface has had a dramatic and immediate effect. Radioactive particles are being stripped from the atmosphere by unknown means, and the resulting temperature changes are calming Eos' high winds. The planet's moisture levels are already showing improvement.
You should check A Better Beginning mission description for more information about this vault, its secrets, etc.
Correct solution of Remnant decryption puzzle
The Remnant decryption puzzle is located on the second floor of the vault. Solving it allows you to access the content of the container.