Diamonds or Wood?

 Diamonds can form naturally across the universe under intense pressure and heat, even inside distant planets or during cosmic collisions. Wood, however, cannot exist without life.

Wood is produced only through biological processes. Trees require liquid water, sunlight, a stable atmosphere, nutrients in soil, and long uninterrupted periods to grow and form cellulose and lignin.

While carbon and oxygen are abundant in space, complex plant ecosystems are not. So far, Earth is the only place where the full set of conditions needed for forests has been confirmed.

Scientists have found diamonds in meteorites and believe diamond rain may occur on planets like Neptune and Uranus. No such natural cosmic process exists for wood without living organisms.

That’s why some researchers describe wood as a biological signature of life itself. Its presence signals not just chemistry, but long-term planetary stability and living systems.