The best AI chatbots of 2026: I tested ChatGPT, Copilot, and others to find the top tools around

I pushed eight free AI chatbots to their limits to find the best AI chatbots of 2026. To explore our top picks, check out ZDNET's chatbot-by-chatbot guide.
IEEE

Reliability of NAND Flash Arrays: A Review of What the 2-D–to–3-D Transition Meant

Abstract: This paper reviews what changed in the reliability of NAND Flash memory arrays after the paradigm shift in technology evolution determined by the transition from 2-D to 3-D integration ...
Investopedia

Investment: How and Where to Invest

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
Investopedia

Year to Date (YTD): What It Means and How to Use It

Daniel Liberto is a journalist with over 10 years of experience working with publications such as the Financial Times, The Independent, and Investors Chronicle. Stella Osoba is the Senior Editor of ...
Johns Hopkins Medicine

What You Can Do Now to Help Prevent Osteoporosis

Did you know that that 50 percent of women in the U.S. age 50 or older will break a bone due to osteoporosis? Overall, about 54 million Americans have osteoporosis—a gradual thinning out of the ...
IEEE

A Machine Learning Approach to DoA Estimation and Model Order Selection for Antenna Arrays With Subarray Sampling

Abstract: In this paper, we study the problem of direction of arrival estimation and model order selection for systems employing subarray sampling. Thereby, we focus on scenarios, where the number of ...
USA Today

Getting ready to shovel snow? Do this first to make it easier.

A winter storm is coming, so you’ve dragged the snow shovels from their summer hiding places, stocked up at the grocery store and filled your car’s gas tank. Is there anything else you can do to ...