Feb. 25—Students in Shannon Heintz's advanced biology class at Abilene High School recently learned how to isolate their DNA from their cheek cells. They then inserted that DNA into pendants in the ...
Students take samples of water and the microscopic creatures within at the Alviso Marina County Park. (Image by Erika Cardema) At the Alviso Marina County Park, reddish-brown water laps at the edge of ...