Researchers at the University of Nevada-Reno have found an innovative new use for a morning staple: coffee. Their studies reveal that used coffee grounds can be converted into biodiesel, a renewable form of fuel that could one day power vehicles. The idea of cars running on fuel that carries the aroma of cappuccino has captured public imagination, offering both an eco-friendly alternative and a quirky twist on the future of energy.

The process involves extracting oils from spent coffee grounds, which can then be refined into biodiesel. With billions of pounds of coffee consumed globally each year, the potential fuel source is abundant and readily available. Scientists believe this approach not only provides a sustainable energy option but also reduces waste, since coffee grounds typically end up in landfills. For a society eager to find alternatives to fossil fuels, the discovery suggests a creative, practical step forward.

While coffee grounds might eventually fuel vehicles, health experts caution that coffee itself may not be the best way to fuel our bodies—at least not first thing in the morning. Many people instinctively reach for a cup of coffee immediately after waking up, but doctors now recommend waiting. According to research, drinking coffee too early may interfere with the body’s natural rhythm and hormone levels, particularly cortisol, which helps regulate alertness and energy.

The ideal time for coffee, experts suggest, is between 9:30 a.m. and 11:30 a.m. By then, cortisol levels have dipped naturally, making caffeine more effective without disrupting the body’s biological processes. Drinking coffee at this time may also help reduce jitters, energy crashes, and potential dependence on higher doses of caffeine throughout the day.

This recommendation challenges long-held habits, especially in cultures where brewing coffee is one of the first steps of the morning routine. However, health specialists argue that a small shift in timing could improve both mental focus and physical energy. For many, it may also highlight the importance of hydration and a balanced breakfast before caffeine intake.

Together, these two perspectives—scientists converting coffee waste into biodiesel and doctors redefining the best way to consume coffee—underscore the bean’s remarkable versatility. From powering engines to shaping daily routines, coffee continues to prove that it is more than just a beverage; it is a resource with the potential to energize both people and the planet.