Energy efficient light bulbs have come to symbolize the promise of smarter, greener, cost-saving technologies. The image of the coiled CFL (compact fluorescent lamp) reminds us that we can save money while saving energy.
The Latest On: Mercury
Silver was the precious metal at the foundation of the Roman Empire’s economy and since silver is often embedded in lead ore, lead was an abundant byproduct available throughout the empire. As such, Romans used lead in everything from plumbing pipes to wine to women’s makeup. In a sense, it was the high fructose corn syrup of its day: it was found in a plethora of common items and caused negative health effects.