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Phosphate-buffered saline (PBS) is a buffer solution (pH ~ 7.4) commonly used in biological research. It is a water-based salt solution containing disodium hydrogen phosphate , sodium chloride and, in some formulations, potassium chloride and potassium dihydrogen phosphate .
The videos range in style from interviews with experts, such as 2011 Physics Nobel Laureate Brian Schmidt, [24] to science experiments, dramatisations, songs, and – a hallmark of the channel – interviews with the public to uncover misconceptions about science.
Hank (left) and John Green (right) co-created Crash Course and hosted the initial Biology and World History series, respectively. The Crash Course YouTube channel was conceived by the Green Brothers after YouTube approached them with an opportunity to launch one of the initial YouTube-funded channels as part of the platform's original channel ...
Crash Course Biology Preview. In 50 episodes, Dr. Sammy Ramsey will teach you biology, the science of life. This course is based on an introductory-level college and AP Biology curriculum.
To find out, host David Pogue investigates the surprising molecules that allowed life on Earth to begin, and ultimately thrive. Along the way, he finds out what we’re all made of—literally.
PBS was established on November 3, 1969, by Hartford N. Gunn Jr. (president of WGBH), John Macy (president of CPB), James Day (last president of National Educational Television), and Kenneth A. Christiansen (chairman of the department of broadcasting at the University of Florida). [17]
Evolution is a 2001 documentary series by the American broadcaster Public Broadcasting Service (PBS) and WGBH on evolutionary biology, from the producers of NOVA.
