We compare the Propeller Killer high efficiency paddle with a traditional propeller to analyze performance, speed, and efficiency. Perfect for marine engineers, RC enthusiasts, and boat hobbyists.

Justin Jaffe is the Managing Editor for CNET Money. He has more than 20 years of experience publishing books, articles and research on finance and technology for Wired, IDC and others. He is the ...

Constantinides et al., perform a recall study from a British South Asian genetic cohort to explore the genetic and phenotypic risk of cholestatic liver disease. 55.6% of participants with rare ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Dr. JeFreda R. Brown is a financial ...