While certainly not exhaustive, a collection of links that I find useful and/or informative.
Data Visualization
Why you should stop using that rainbow colorbar! (with lots of good alternatives)
Beautiful colormaps for oceanography:cmocean
Los Alamos National Laboratory "Data Science at Scale" Colormaps
VISCM: Python tool for designing and creating colormaps
Diversity in Science
Women
Why So Few? How to Increase the Number of Women in Science by Meg Urry
Why It's Crucial to Get More Women Into Science
An interesting article...How to Attract Females Engineers
POC
60 COLLEGE AND GRADUATE SCHOOL SCHOLARSHIPS FOR WOMEN OF COLOR
5 Tips for being an Ally by Franchesca Ramsey
Mentoring Minority Students by Sarah Tuttle
How Minority Students’ Experiences Differ: What Research Reveals (paywall)
A field guide to privilege: some reasons why we lack diversity by Dr. Miriam Goldstein