California

California is home to some of the nation’s most ambitious climate, housing, and social policy experiments. This archive tracks the progress stories and milestones emerging from the state — from clean energy breakthroughs to community health wins.

Virtual reality or cyberspace concept: digital human or robot head, for article on brain-computer interface

Paralyzed woman able to ‘speak’ through digital avatar in world first

A digital avatar has given a paralyzed woman her voice back — speaking at 78 words per minute, more than five times faster than the eye-tracking system she relied on before. Ann, who had a brainstem stroke 18 years ago, worked with UCSF researchers to train an AI to read brain signals from electrodes resting on her brain’s surface. The avatar speaks in a voice reconstructed from her wedding video, complete with facial expressions like smiles and frowns. There are real limits — the system still misreads words about a quarter of the time — but for millions living with ALS, locked-in syndrome, or severe stroke, this points toward a future where losing a voice no longer means losing a self.

Dam, for article on Klamath River dam removal

Work begins along California-Oregon border on largest dam removal project in U.S. history

Klamath River restoration is now the largest dam removal effort in U.S. history, reopening more than 400 miles of river to salmon once the last three dams come down. But the real story is what comes next: members of the Karuk, Yurok, and other tribal nations spent five years hand-gathering seeds from nearly 100 native plant species, and roughly 17 billion of those seeds will be sown along the freed riverbanks over the coming decade. Tribal ecological knowledge is shaping every phase, woven together with western science. For Indigenous communities worldwide fighting to restore ancestral waters, the Klamath offers a powerful template — proof that rivers, and the cultures rooted in them, can be brought back to life.

Empty bottles of alcohol, for article on psilocybin-assisted therapy

First-of-its-kind study reveals how psilocybin helps treat alcohol dependence

Psilocybin-assisted therapy helped 13 people who had struggled with heavy drinking reach the root of what they were drinking to escape, according to new interviews published in Psychology of Addictive Behaviors. Participants described years of self-blame and isolation quieting after their sessions, replaced by something many had never felt toward themselves: compassion. They credited the trained therapists and carefully held setting as much as the medicine itself, calling both essential to feeling safe enough to face old pain. The researchers are honest about the study’s limits, including a mostly white, higher-income participant group. Still, as Oregon and Colorado open legal pathways, these first-person accounts offer a hopeful glimpse of how psychedelic care might one day reach the communities who need healing most.

CalTech Space Solar array, for article on space solar power

World-first space solar demonstration beams power from orbit to Earth

Space-based solar power just crossed from theory into reality: a Caltech team has, for the first time, beamed energy from orbit down to a receiver on Earth. The signal arrived at a rooftop in Pasadena exactly when, where, and at the frequency engineers predicted — proof that the precision needed for a future full-scale array is achievable. The demonstrator weighed just 50 kilograms and used flexible, lightweight arrays never before flown for this purpose. The eventual vision is enormous and far from cheap, but the appeal is simple: panels in space see no night and no clouds. If this technology matures, clean power could one day reach communities far beyond the grid’s reach.