Ethics committees and funding agencies often receive protocols that involve either too many or too few animals to answer the specific research question being investigated. It is evident that a greater ...

Survey data in this report are based on Pew Research Center surveys conducted with a nationally representative sample of Hispanics. Differences between groups or subgroups, such as foreign-born and ...

This approach directly measures the change in the stream between two points. Typically it covers a relatively short reach of river so it may be easy to collect samples. If there are no changes in flow ...

The survey was conducted by telephone with a national sample of adults (18 years of age or older) living in all 50 U.S. states and the District of Columbia. The results reported here are based on ...