Rihanna is not only an award-winning singer but also a beauty guru. She let fans in on how to rock black lipstick — a daring color she wears frequently.

Abstract: This paper presents a novel hybrid strategy for optimizing Maximum Power Point Tracking (MPPT) in photovoltaic (PV) systems operating under Partial Shading Conditions (PSC). The proposed ...

Kelly Osbourne is known for many things, with her bold makeup being one of them. Here's a peek at some of her most dramatic looks from over the years.