The S&P 500 is more concentrated today than it has been at any point in history, which means poor performances from a few companies could sink the entire index. The Invesco S&P 500 Revenue ETF weights ...

In a recent review article published in the Journal of Optics, researchers highlighted the fast-paced progress in holographic display technology within the field of optics, driven by growing demands ...

While Comcast has received the most press this year for its legendary, but perhaps improving, customer service -- the company did not even make Consumer Reports fifth annual "Naughty & Nice" list.

Abstract: The selection of different modulation schemes affects the switching losses and output power quality of the PET (Power Electronic Transformer). Improvements to the modulation technique can ...

Large scale destruction of trees—deforestation—affects ecosystems, climate, and even increases risk for zoonotic diseases spreading to humans. A logger takes down a large tree at the Tuxekan logging ...