There was a Fox Kids mini-series (3 episodes, I'm almost sure). It was a sci-fi 'esque story. There were 3 main characters I believe, two teenagers (one male and one female) and another who was younger. The story had these aliens that I THINK were tripods.

I think the story had one of those (end of a species, continuing life) themes.
This was right around the time of shows like Exo-Squad, so early 90's.

For the past 3 years I've been trying to find the name of the story, because as a child I absolutely fell in love with it having watched it, and then never saw it again. It would make me SO happy to find it.
:(

Just taking a shot in the dark here, but could you being thinking of Red Planet?

I think you're right! I have no screenshots to go from :(
But (as well as my memory serves me) that looks like it's the right story! THANK YOU SO MUCH!
Now I just have to find it somewhere, I'll check YouTube.

I remember the name, but I didn't see it, or I'd probably have it on tape.... Least I found the name for ya! I found an old post from a tape trader who said he had it, dunno if the email's still valid (he hasn't posted for 5 years), but it's worth checking if you really want a copy:

http://makeashorterlink.com/?Y684526FD

The mini-series is three parts long and it's called Red Planet (Robert A Heinlein's Red Planet, to be exact). It's based on the novel.

You can download a promo of Red Planet from its premiere in 1994 from my website: http://www.blastfromthepasttv.net/redplanetpromo94.zip . I've got many promos advertising it, but I haven't had the time to encode them.

The mini-series aired three times: its premiere in May 1994, repeat in January 1995, and during the Fox Kids Spring Fling in May 1996. I've got all three parts on tape and I may be offering for trade in the near future (I've also got Siegfried and Roy: Masters of the Impossible).

Hope this information helps.