The Sun is now at the most active point in its roughly 11‑year solar cycle, and scientists say the current peak has arrived ...

Add Yahoo as a preferred source to see more of our stories on Google. As the polar vortex sweeps across the U.S., electricity demand is expected to surge by 20%, according to SolarReviews.com. Data ...

Sedona, Arizona, is best known for two things: the stunning red-rock landscape, which draws thousands each year for hiking and mountain biking, and its vortex energy, a contested phenomenon that has ...