Many Americans use social media to connect with one another, engage with news content, share information and entertain themselves. Explore the patterns and trends shaping the social media landscape.

The internet represents a fundamental shift in how Americans connect with one another, gather information and conduct their day-to-day lives. For more than 20 years, Pew Research Center has documented ...

A respected resource for decades, the Guide for the Care and Use of Laboratory Animals has been updated by a committee of experts, taking into consideration input from the scientific and laboratory ...