Can’t remember title of sci-fi show about terraforming causing death of native life.

[Blue Jaunter]

I saw a random episode on a public tv station in the 90s.
I do not know if it was a series or a single episode of an anthology.

Earth sends probes to Mars or Venus to search for life.

No life is found.
So Humans decide to begin terraforming operations.

I believe probes were sent over decades to introduce tolerant plant life and biomass and probably other means I do not remember.

At some point it is determined that the planet is ready for human life.

An expeditionary force is sent and when the astronaut steps from the ship he sees strange white spheres all over the surface as far as the eyes can see.

Look like ostriche egg size.

Apparently we were wrong.

Their WAS native life forms and our terraforming destroyed an entire race of beings simply because they existed beyond our narrow definition of “LIFE.”

A cautionary tale.

I have been wondering what it was called for years.

 

[Al Jackson]

I saw a random episode on a public tv station in the 90s.

I wonder what the first story in SF was about colonists whipping out the native population? Could be Ray Bradbury's story , "—And the Moon Be Still as Bright" , in the Martian Chronicles.

 

[Blue Jaunter]

Saw that not that but similar in story