The win marks the third time in four years the program has placed first in national competition.

The win marks the third time in four years the program has placed first in national competition.
The win marks the third time in four years the program has placed first in national competition.
The win marks the third time in four years the program has placed first in national competition.
Walker studies Poecilia mexicana, a species of live-bearing fish that have adapted to surviving in hydrogen sulfide-abundant waters, in the Tobler Lab.