WASHINGTON, July 3 (Reuters) - A dangerous heat wave upended Fourth of July celebrations across swaths of the central and eastern U.S. on Friday, forcing officials in the nation's capital and ...

The nation’s capital always hosts grand Fourth of July celebrations, but Washington’s upcoming semiquincentennial celebration is poised to eclipse all previous years. A typical July 4 fireworks ...

A display at Washington, D.C.’s Great American State Fair has been taken down after an “unapproved image” drew criticism from some fairgoers. CNN’s Gabe Cohen said the dustup occurred over an image of ...

Despite the rapid adoption of LLM chatbots, little is known about how they are used. We document the growth of ChatGPT’s consumer product from its launch in November 2022 through July 2025, when it ...

You know those millennials who pepper every text with an “lol” or emoji like it’s life support? Anna Gaddis (@annagaddis) is one of those people — and she’s clapping back at the haters. In a recent ...

Abstract: In this article, we investigate adaptive event-triggered distributed state estimation problems for jointly detectable linear time-invariant (LTI) systems with unknown inputs over directed ...

Abstract: In this paper, observer-based output feedback control is developed for discrete-time systems with multiple state delays and input delays. In order to estimate the system state, two types of ...