An incomplete and thoroughly non-exhaustive list of useful, educational, and entertaining scientific resources:

Science Communication:

• Skype A Scientist: Connecting volunteer scientists with classrooms around the world by video
• 500 Women Scientists: Providing resources to improve gender equity in science and databases of women scientists for reporters, conference organizers, and the public.
• Ten Hundred Words of Science: Challenge yourself to explain technical topics using on the thousand most commonly used English words

Data Visualization & Graphics:

• Our World In Data: Charts and data summaries on the world’s most pressing problems
• Edward Tufte: Data visualization theory & graphic design innovations (such as sparknotes)
• HandsomeAtlas: Interesting historical data visualizations
• Information is Beautiful: Data visualization
• Randal Munroe and xkcd: Data visualization & humor (radiation dosages, Up-Goer Five, lakes & oceans)

Ethics:

• The National Academies, On Being a Scientist:  Responsible conduct in research
• MeTooSTEM: Resources, stories, and action items on sexual harassment in science
• Science Image Integrity: Image editing and presentation ethics