A. Publicly Released Information
On September 13, 2000, a giant meteorite descended upon the South Pole. A huge explosion resulted, melting the ice and generating massive tidal waves, which in turn caused the sea level to rise several tens of meters. Collectively, more than 2 billion people on the islands of the Southern Hemisphere died.
The energy from the explosion knocked the Earth off its axis, producing climate change on a global scale; Japan became a country of perpetual summer. Many places around the world suffered drought, flooding, volcanic eruptions, abnormal weather patterns, and other calamities as a result of this Second Impact. Economic panic and civil war erupted in every nation.
B. Generally Recognized Information
Mankind discovered a humanoid lifeform, designated the first Angel, at the South Pole. During the investigation, a giant explosion occurred for reasons unknown. The well-publicized theory that it was caused by a giant meteorite is the product of rigged intelligence.
C. Confidential Information
Adam, the First Angel — and the cause of Second Impact — was discovered by the Katsuragi Research Team at the South Pole. It was courtesy of Seele's funding that the Katsuragi Team discovered the White Moon, which contained Adam and the Spear of Longinus.
D. In-Depth Information
The other Seed of Life, Adam, was awakened by mankind. The Katsuragi Investigation Team frantically attempted to reseal Adam using the Spear of Longinus, but failed. Ultimately, through the phenomenon of the S² Engine apparently going into overdrive by artificial means, it became that only an absolute catastrophe — the resetting of all life due to the disappearance of A.T. Fields, and the construction of an ecosystem with an Adam base — was prevented. This is called the Second Impact. The incident blew Adam completely apart.