Abstract: In this letter, we propose a 2 × 2 array antenna capable of 3-D beam-steering and operating frequency adjustment. Each element consists of a patch antenna and a narrow-width I-shaped stub, ...

Stress is part of everyday life, from work deadlines to family responsibilities. But when the tension does not fade—even when the stressor is gone—it may be a sign of something more serious. Jason ...

Liberal Supreme Court Justice Sonia Sotomayor on Tuesday warned that the poor quality of civics education means Americans may not know the difference between a president and a king. Sotomayor bemoaned ...

iPhone 17 Pro or iPhone Air? It’s a harder decision than usual this year for many iPhone buyers. Here’s how Apple’s latest flagship models stack up against each other, and all the differences that ...

Turtles and tortoises are both reptiles with shells, so what exactly are their differences? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

What is the difference between a moon and a planet? Trick question! According to scientific definitions, there often isn’t much of a difference at all. That might seem counterintuitive, but it’s true.

Integrative medicine blends conventional and complementary care, while functional medicine seeks to identify root causes of symptoms first and restore the function of the different body systems. When ...

Ascorbic acid and citric acid can be found in a variety of fruits and vegetables, especially citrus. They are often confused with one another because of their similar names and origins. However, while ...

President Donald Trump’s massive legislation package, which includes the largest cuts to Medicaid in history, heads to the White House for signature after House Republicans won a near party-line vote ...