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.

Skyblock Guide

Skyblock is a unique world seed in Terraria that begins the player on a floating sky island with very few resources. So how do you progress and survive?
IEEE

Joint Optimization of Subarray Tiling and Rotation Angles for Circularly Polarized Multi-Beam Domino-Tiled Arrays Employing Generalized and Phase Dictionary Matrices

Abstract: This communication proposes a novel joint optimization method for subarray tiling and rotation angles in domino-tiled planar arrays to synthesize multi-beam circularly polarized (CP) ...
Wall Street Journal

U.S. Steps Up Planning for Possible Action in Iran

WSJ’s Benoit Faucon explains the financial collapse fueling deadly clashes, how President Trump and Iran are responding to the unrest and what’s next for the country’s deteriorating political ...
IEEE

A Large-Aperture Multi-Subarray Radial Line Helical Array Antenna With Dielectric Windows for High-Power Microwave Applications

Abstract: This article presents a large-aperture multi-subarray radial line helical array antenna equipped with dielectric windows for high-power microwave (HPM) applications. The design integrates ...