Performance loss from ultraviolet (UV) light has become a concern for new PV cells, though earlier lab tests may have overstated the issue. Paul Gebhardt, photovoltaic module reliability scientist at ...

The sun's ultraviolet (UV) rays can cause permanent damage to the skin and are also the leading cause of skin cancer. Understanding the UV index and its levels in your area is essential when spending ...

The National Weather Service has issued Heat Advisories and Extreme Heat Watches throughout many parts of Illinois this weekend, warning of dangerously hot conditions and heat indexes over 100. Going ...