Lights Out for 'Earth Hour'

By now, you probably know that tomorrow night (from 8:30 p.m. to 9:30 p.m., local time) is "Earth Hour." This international event encourages households and businesses to turn off their non-essential lights and electrical appliances during the hour to raise awareness towards the need to take action on climate change. The Empire State Building and other landmarks worldwide have already promised to go dark for the hour.

It's also great to hear some retailers are pledging to do the same. Walgreens, for example, plans to turn off all exterior signs at nearly 150 locations throughout Chicago and neighboring communities. Lights in the parking lot, entrance and pharmacy drive-thru will remain on for security and safety reasons. Window signs in stores will inform customers of Walgreens' participation and encourage community involvement. Meanwhile, in New York, the Walgreens billboard in Times Square will also go dark.

Let's hope additional retailers jump on board for this important cause.