The government announced that a problem had arisen with the ultraviolet rays emitted by the sun. The severity was such that it could melt any living creature exposed to it into liquid. However, the issue was limited to ultraviolet rays. Conversely, this meant there was no problem with visible light—just light itself. This was proof that we could at least be active at night. If there had been a problem with visible light, the moon, which reflects that light, would have also become a definitive threat...