Half Life

Written by: Richard Lenski

Primary Source: Telliamed Revisited, 09/06/2019.

Today marks a unique day for the LTEE and me.

The LTEE started on February 17, 1988.  That was 11,517 days ago.

I was born on August 13, 1956.  That was 23,034 days ago.

That means that the LTEE is now half as old as I am.

To put it another way, I’ve spent half a lifetime on the LTEE.

Well, that’s not quite the right way to put it, since I’ve done a few other things during that time. Like raising a family—with a lot of help.  And a lot of other science, also with a lot of help, not to mention all the work of so many students and collaborators on the LTEE itself.

And unlike a radioactive isotope, the bacteria haven’t been decaying—they’ve been getting better and better at living in their flask-worlds.

My hope is that this long-term evolution experiment will continue for a long time. A very long time. For a lot longer than my own lifetime.

Here are a couple of photos from around the time the LTEE started. The first one shows Madeleine and me camping near Joshua Tree National Park in the summer of 1987, at the annual retreat of the UC-Irvine EEB department, and only a couple months before the birth of our youngest. The next one shows me snuggling with my three kids in early 1989.

Camping in Joshua Tree National Park in 1987Playing with kids in 1989.

How time flies. Luckily, though, I get to snuggle with my three grandkids now.

Bacterial generations. Human generations. Growing, evolving, and learning.

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Richard Lenski
Dr. Lenski is an evolutionary biologist. He writes about evolutionary science – past, present, and future – and some of the goings-on in the life of a scientist.
Richard Lenski

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