Technology & engineering

Anastasios Angelopoulos (L) and Wei-Lin Chiang, founders of Chatbot Arena.

People

As companies pour billions into AI, a ranking system by UC Berkeley students has all eyes on it

Chatbot Arena, which allows users to rank and compare AI models, has quickly grown to 1 million monthly users.

Water pours from an outdoor faucet into a cupped hand.

Mind & body

Study finds stored drinking water can spread harmful bacteria

Ann Johnson sits in her wheelchair with a cord plugged into a neuroprosthesis implant while she participates in a clinical trial helping to restore her ability to speak with a brain-computer interface

Research

Berkeley Voices: A stroke left her ‘locked in.’ With the help of AI, she heard her voice again.

Research

Artificial leaf uses sunlight to capture carbon and produce valuable chemicals

Scientists trick the eye into seeing new color ‘olo’

A person bends over to tie their running shoe, with a water bottle in the foreground.

New wearable sweat sensor can track your hydration status

A new electric train at the Caltrain San Francisco station.

Electric trains are quieter, more reliable than diesel. New study finds they’re healthier, too.

Closeup of gloved hands connecting a brain-computer-interface to the back of research participant's head.

Streaming brain-to-voice neuroprosthesis restores naturalistic speech

A photo of a small, white, propeller-shaped object that is held between the tips of two fingers. The object is smaller than the width of a fingernail.

UC Berkeley engineers create world’s smallest wireless flying robot

A microscope image shows a collection of grey spheres

Researchers create quantum sensors by mixing diamond dust with water

UC Berkeley professor Adam Yala is pioneering AI for cancer prediction

Study finds persistent spike in hate speech on X

A portrait of Michael I. Jordan in his office.

Michael I. Jordan receives Frontiers of Knowledge Award for advances in machine learning

A collage showing headshots of Stuart Russell, Kristin Persson, David Schaffer, Victoria Coleman and Margaret Torn.

Five UC Berkeley faculty named to National Academy of Engineering

A person is pictured holding their arm above a table. A device is strapped to the back of the person's wrist and hand, and the device is grasping a yellow tennis ball.

New device helps people with spinal cord injuries grasp large, heavy objects

An illustration shows a man being manipulated like a string puppet by a disembodied hand.

Why conspiracies are so popular — and what we can do to stop them

All Technology & engineering