“Love is like oxygen. You get too much, you get too high; not enough and you’re gonna die.” — Andy Scott, of Sweet OSHA standards define safe lower and upper limits to the concentration of oxygen in the atmosphere to which workers are exposed. The limits are a minimum of 19.5% and a maximum of [...]
“In the last two decades of the twentieth century, hundreds of people have died of carbon dioxide asphyxiation near volcanoes in Cameroon and in Indonesia.” — Allison Stark Draper, in Coping With Natural Disasters Many worry about carbon dioxide in the atmosphere as a greenhouse gas. Carbon dioxide is also a much more urgent hazard. [...]
“I love to breath. Oxygen is sexy.” — Kris Carr How long can you hold your breath? One minute? Two minutes? Pearl divers have been known to hold their breaths for over 10 minutes. When we’re breathing, though, it’s at a rate of between 8 and 20 breaths per minutes. So, many find it difficult [...]
“It is these properties that make materials so useful that also pose hazards to health and property.” — Peter Lodal Liquid nitrogen has some wonderful properties. It is really, really cold, so it is great for flash freezing delicate items. When vaporized, it helps maintain non-flammable mixtures, even when flammable vapors are present. Because it [...]
