Final answer:
Penicillin and electricity both stand as transformative discoveries, with penicillin saving millions of lives as a potent antibiotic and electricity being integral to modern technology and daily life.
Step-by-step explanation:
Discussing which was the greater discovery between penicillin and electricity is a matter of perspective, as both have significantly transformed human lives. Penicillin was a groundbreaking antibiotic discovered serendipitously by Alexander Fleming in 1928 when he noticed a mold, later identified as Penicillium, that had antibacterial properties. This discovery led to saving millions of lives, particularly during World War II, and marks the modern age of antibiotic usage.
On the other hand, the discovery and harnessing of electricity have revolutionized every aspect of modern life, from industry to how we communicate and entertain ourselves. Electricity is a fundamental part of almost every modern technology and has led to advances in many scientific fields. When comparing the impact of these discoveries, one must consider the widespread and multifaceted usage of electricity against the more specific, yet life-saving benefits of penicillin.