Dr. Richard Pan explains California's strategy for increasing vaccination rates.
Urban archaeologists dig for stories beneath city streets.
Vaccination began as a traditional therapy over a thousand years ago.
Vaccines work with our immune system to keep us from getting sick.
The polio vaccine's history extends more than fifty years.
Comets carrying chemicals necessary for life may have come to Earth billions of years ago.
NASA’s Kepler mission lets us search for planets orbiting stars outside our solar system.
Scientists discover evidence for the key ingredients for life on Saturn's moon Enceladus.
New technology may bypass the need to keep vaccines cold by stabilizing them with silk.
Aquanauts study the health of marine organisms—by becoming their neighbors.
Bhutan is the first developing country to embrace a vaccine to fight cervical cancer.
New miniature vaccines may be administered like painless tattoos.
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