Imagine if Earth's history had a mystery novel, and one of its biggest unsolved puzzles was: Where did all the nitrogen go?

The atmosphere is mostly nitrogen (approximately 80% ... Even though it is hard to imagine that gases have much mass, the atmosphere extends so far above us, that the weight of the air above ...

Nitrogen oxides in ... mishap produced in the higher atmosphere is hard to tell. Scientists, for example, are also not sure how much of the megarocket's mass burned up and how much of it fell ...

Although nitrogen is very abundant in the atmosphere, it is largely inaccessible in this form to most organisms. This article explores how nitrogen becomes available to organisms and what changes ...

Living organisms are primarily made of six elements: oxygen, carbon, hydrogen, nitrogen ... this stored carbon reenters the atmosphere as CO 2. Mass balance ensures that the carbon formerly ...

Nitrogen emissions into the atmosphere consist mainly of ammonia (NH3) and nitrogen oxides (NOx). In 2022, they comprised 121 million kilograms of ammonia (mainly from agriculture) and 162 million ...

While it makes up 78% of the atmosphere today ... Delivering just 5–10% of Earth’s mass from these rocks would supply enough nitrogen, carbon, and argon. If the core formation happened ...