US astronauts testify from Space Station

On his 249th consecutive day in space, U.S. astronaut Scott Kelly told Congress that what he misses most is his friends and family on Earth and the chance to experience nature.

Rabbits kept indoors could be vitamin D deficient

Rabbits that remain indoors may suffer from a lack of vitamin D, researchers report in a new study. In rabbits kept as pets or used in laboratory studies, the deficiency could lead to dental problems, undermine their cardiovascular ...

Water treatments alone not enough to combat fluorosis in Ethiopia

Increased intake of dietary calcium may be key to addressing widespread dental health problems faced by millions of rural residents in Ethiopia's remote, poverty-stricken Main Rift Valley, according to a new Duke University-led ...

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