Computational biologists at European Molecular Biology Laboratory (EMBL), previously at Carnegie Mellon University and at the Institute for Molecular Medicine (University of Lisbon).
Parenting
Q&A for parents, grandparents, nannies and others with a parenting role
Academia
Q&A for academics and those enrolled in higher education
Physical Fitness
Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs
Cross Validated
Q&A for statisticians, data analysts, data miners and data visualization experts
Personal Finance & Money
Q&A for people who want to be financially literate
Area 51
Stack Exchange Network staging zone, where users come together to build new Q&A sites
TeX - LaTeX
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Biology
Q&A for biology researchers, academics, and students
English Language & Usage
Q&A for linguists, etymologists, and serious English language enthusiasts
Programmers
Q&A for professional programmers interested in conceptual questions about software development
Physics
Q&A for active researchers, academics and students of physics
Theoretical Computer Science
Q&A for theoretical computer scientists and researchers in related fields
Database Administrators
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Server Fault
Q&A for professional system and network administrators
Android Enthusiasts
Q&A for enthusiasts and power users of the Android operating system
Unix & Linux
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Mathematics
Q&A for people studying math at any level and professionals in related fields
User Experience
Q&A for user experience researchers and experts
Bicycles
Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles
The Workplace
Q&A for members of the workforce navigating the professional setting
Answers OnStartups
Q&A for entrepreneurs looking to start or run a new business
Personal Productivity
Q&A for people wanting to improve their personal productivity
Computational Science
Q&A for scientists using computers to solve scientific problems
German Language & Usage
Q&A for speakers of German wanting to discuss the finer points of the language and translation