Xcel will change on-peak expensive electricity from the current 3 p.m. to 7 p.m. to 5 p.m. to 9 p.m. starting in October.

Learn how to create a self-updating invoice tracker in Excel with formulas, macros, and automation tools. Save time and stay ...

Antarctic krill do not only react to external environmental influences such as light or food. They also use their internal clock to adapt to the extreme conditions of the polar environment.