Chats and Forums

Solar Power Forum - Open discussion on solar power systems and other renewable energy systems.
http://solarpowerforum.org

Sci-Tech.co.uk - A place to learn and discuss various aspects of science and technology and how they interact.
http://www.sci-tech.co.uk/

UseSrv.com Message Forum - Lively discussion about various aspects of science and medicine.
http://usesrv.com/science/

The Science Forum - Discussion topics include astronomy, cosmology, biology, chemistry, earth sciences, physics, social sciences, health, medicine, history, economics, business, engineering, computer science, math and environmental issues.
http://www.thescienceforum.com/

Survival Blog for Scientists - Professional scientists write about their scientific life with the aim of giving others tips on how to survive in science.
http://sciencesurvivalblog.com

The Science Forums - Active forums covering all areas of science. Everybody is welcome, regardless of level of scientific knowledge.
http://www.sciencefile.org/forums

Indian Science SciForum - Science discussion board and networking site for science scholars. Boards include news and research topics in chemistry, biology, physics, math, biotechnology, biochemistry, bioinformatics, immunology, nanotechnology, engineering, medical and agricultural science.
http://www.sciforum.indianscience.in

Element Science Community Forums - A place to post about any science-related topic.
http://www.elementlist.com/lnx/index.php?action=displaycat&catid=29

Science Chat Forum - An advanced discussion forum for science, philosophy, and related matters. Multiple forums, career announcements, and a dynamic IRC chatroom.
http://www.sciencechatforum.com/

Space Alliance - Forum covering space technology, in English and Romanian.
http://forum.spacealliance.ro/

Plastictalk Forum - A plastics discussion forum for the plastics and rubber industry worldwide.
http://www.plastictalk.com/forum/

Nerdy Science Blog - A group of nerds who are passionate about science record their thoughts.
http://science.kukuchew.com

SciLife - Online networking, communication and presentation platform specially designed for the needs of researchers who can present their work, groups and resources to potential partners in science and industry.
http://www.scilife.net

Groupsrv.com - Serious discussion about traditional and alternative topics in science.
http://www.groupsrv.com/science/

Universal Scientist - Forum covering a wide range of scientific topics.
http://www.UniversalScientist.com

The Science Hub - Topics astronomy, behavioral science, biology, chemistry, geology, climate, medicine, math, and physics.
http://www.thesciencehub.com/forums.aspx

PhyChemBioMath Forums - Forum for the discussion of problems for scientists and college students.
http://www.phychembiomath.com/

Science Forums - Many topics covered; for beginners to serious researchers.
http://www.scienceforums.net/

IntellectToday - An intellectual community focused on science and technology, philosophy and related subjects.
http://www.intellecttoday.org/

LabRoots - Social networking site that enables scientists, engineers, and other technical professionals to connect, collaborate with, and learn from each other.
http://labroots.com/

Sapo's Joint - A moderated discussion forum focused primarily on hard sciences, with additional topics devoted to the artistic interests of our members. Online Chat and LaTeX support are included.
http://saposjoint.net