Xcel Energy customers are going to start seeing changes in their bills as new time of use are now in effect. An NFL kicker ...

“A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.”—Winston Churchill Optimism can be defined as “the extent to which people hold generalized ...

Figure 1: Comparison of the predicted amino-acid sequence of the envelope gene of proviruses from PBMCs of five men recently infected with HIV-1. Figure 2: Phylogram of representative V1–V3 envelope ...