Recreate Pasteur's classic experiment
Can life arise from nonlife? In 1864, noted French scientist Louis Pasteur dispelled this concept, termed "spontaneous generation", through one of science's most famous experiments. Pasteur showed that microorganisms in a sterilized nutrient broth did not develop spontaneously. Now your students can recreate Pasteur's findings. They'll grow organisms in flasks exposed to particles in the atmosphere. Then they'll compare them to those grown in flasks with special s-shaped necks, exposed to air but not particulate matter. In the process they gain firsthand insight into the fundamentals of evolution.