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In 19th century Britain, keeping sugar out of tea became a political statement against slavery. The sugar boycott was no easy choice for the radical poet, who hated slavery but loved tea.

The first studies of cannabidiol show promise for treatment-resistant epilepsy, but researchers caution that these are preliminary results and bigger, better studies are needed.

Physicist Robert Davies worked with a classical quartet and two visual artists to create a musical performance about climate change. The music and images, he says, help the information take hold.

The use of a synthetic drug called "bath salts" is on the rise in the Marine Corps because there's no way to test for it - at least, not yet.

A flu strain deadly to chickens and turkeys is striking farms in the West and Midwest. This week, it hit an Iowa facility with millions of egg-laying hens. No one knows how it's entering houses.

Sharlene Adams has hypertension but no car, computer or credit card. Insurance will pay for a blood pressure cuff, but the many small hurdles in her life make it a time-consuming ordeal.

Though it never panned out, the sugar industry backed research to develop a vaccine to fight tooth decay, old industry documents reveal. Researchers say the goal was to deflect efforts to limit sugar.

Red wine and chocolate may be good for you, but it's likely not from the resveratrol. A study finds that the antioxidant had no influence on longevity, cancer, heart disease or inflammation levels.

Hopes have faded that gunman Stephen Paddock's girlfriend would shed light on why he committed the worst massacre in modern U.S. history.

Airs Saturday, December 14, 2013 at 1:30 p.m. on KPBS TV