James Chen, CMT is an expert trader, investment adviser, and global market strategist. Samantha (Sam) Silberstein, CFP®, CSLP®, EA, is an experienced financial consultant. She has a demonstrated ...

What Is the Missionary Position? The missionary position is a sex position in which one partner is on top of the other so that they're face to face. The penetrating partner is on top and usually has ...

John Summa is the founder of OptionsNerd.com and has authored a number of books. He has 6+ years as a chief economist and derivatives strategist. Timothy Li is a consultant, accountant, and finance ...

There's nothing wrong with missionary—it's a classic for a reason!—but trying new sex positions can seriously benefit your relationship—and keep the spark alive, even in a long-term marriage or ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...

Synthesis of nanostructured cubic phase SnO 2 thin film and its trace-level sensing of CO gas This study presents a cubic phase SnO 2 thin film gas sensor with ultra-high CO sensitivity and 1 ppb ...