Updated Urey-Miller experiment strongly points to lightning as catalyst for creating building block compounds

https://www.space.com/the-universe/earth/was-life-on-earth-sparked-by-cloud-to-ground-lightning-strikes
...
One of the major questions regarding the
beginning of life on Earth revolves around
how the building blocks for life, such as
nitrogen and carbon, emerged on our young
planet. The three leading theories include
delivery by asteroids and comets that
crashed into Earth, emissions from deep-sea
vents, and cloud-to-ground lightning strikes.
According to a team of chemists from Harvard
University, that last option is looking
mighty likely.
...
This is far from the first experiment to
suggest cloud-to-ground lightning as a
potential key to unlocking life on Earth.
American chemist and Nobel Prize winner Harold
Urey and his research student Stanley Miller
performed a similar experiment, appropriately
dubbed the Urey-Miller experiment, in 1953.
...
While the science still holds, we now suspect
the young atmosphere is comprised of carbon
dioxide and nitrogen. Thus, the Harvard team
performed an updated version of the Urey-Miller
experiment.
...
The paper is here
https://www.pnas.org/doi/10.1073/pnas.2400819121
Mimicking lightning-induced electrochemistry
on the early Earth