What are the pros and cons of mercury light bulbs?

Mercury light bulbs, such as compact fluorescent lamps (CFLs), are energy-efficient and have a longer lifespan compared to traditional incandescent bulbs, which can lead to reduced electricity costs and lower carbon emissions. However, they contain mercury, a toxic substance that poses environmental and health risks if the bulbs break or are improperly disposed of. Additionally, they may take longer to warm up to full brightness and can have a less favorable color rendering compared to incandescent options. Overall, while they offer significant energy savings, safe handling and disposal are crucial considerations.