This thermal clip-on device is a huge night-time gear multiplier for hunters and observers, transforming any daytime scope ...

WATCH LIVE: Sen Cory Booker speaks through the night on Senate floor in protest of Trump ...

Note: Calculation of the sun WBGT has been suppressed for this hour because the approximation used is not valid at these times. The shade WBGT is calculated for an environment shaded from direct (and ...