Toxic air pollutants are poisonous substances in the air that come from natural sources (for example, radon gas coming up from the ground) or from manmade sources (for example, chemical compounds given off by factory smokestacks) and can harm the environment or your health.
Subsequently, Scorpius X-1 was discovered in 1962 by a team, under Riccardo Giacconi, who launched an Aerobee 150 sounding rocket carrying a highly sensitive soft X-ray detector designed by Frank Paolini.
The Spirit of Scorpius is a Zamorakian ghost. After completion of Observatory Quest, he will give the player an unholy mould and bless unholy symbols. He is found south-west of Ardougne in the Scorpius Shrine, almost due north of the Observatory. Scorpius is very close to the south-east entrance to the Ourania Runecrafting Altar and south-west of the hunting area with red salamanders. Whilst alive, Scorpius was an Astronomer and had an apprentice named Phyrrys. He actually created the art, and has a constellation named after him. Scorpius was later persecuted for his craft and his knowledge and instruments were almost totally lost. The art eventually returned to the world, as discovered in the Observatory Quest. This is covered in the Astronomy book in greater detail.