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More than 200 drugs in the pipeline for ALS are stuck in a system that favors big, slow-moving pharmaceutical companies.

Workers at Agresti Calf Ranch in the Central Valley also were spotted removing animals' horns, apparently without anesthesia.

California passengers from the hantavirus-stricken cruise ship have returned to the U.S. Infectious disease experts break down the potential risk.

A Bay Area resident stuck on a cruise ship with a deadly hantavirus outbreak has returned to Santa Clara County and is being monitored by health officials.

Research on mice suggests movement in the abdomen moves fluid through the brain.

Activists and experts say the time is ripe to activate bipartisan legislation to address pollution in the Tijuana River.

California residents were among the 147 passengers and staff aboard the MV Hondius cruise ship when it was stricken by a suspected outbreak of hantavirus that has left three dead.

A preliminary survey found 20% of street trees that survived the 2025 fires have gone missing in the past year. Local advocates blame a lack of watering and careless contractors.

Indoor tanning is associated with a 75% increase in melanoma risk. A proposed FDA rule intended to protect children is now gone.

A suspected hantavirus outbreak, a rare but deadly disease that attacks the lungs, killed three people and several others have become severely ill aboard a luxury cruise ship.