60+ bloggers selected on the basis of their originality, insight, talent, and dedication provide up-to-date coverage of their different scientific fields... 

http://scienceblogs.com/

News weblog of Nature periodical, allowing readers to comment on recent developments in science and technology... 

http://blogs.nature.com/news/blog/

Collaborative blog dedicated to current events and news, also covering scientific issues... 

http://www.worldchanging.com/

General science and technology news weblog... 

http://www.scienceblog.com/

Jay Manifold's weblog about science and scientific applications... 

http://avoyagetoarcturus.blogspot.com/

Pharmacology writer Merrill Goozner comments on science, health and the public interest... 

http://www.gooznews.com/

Blog providing commentary on technologies, news, and issues relating to next generation energy and the environment... 

http://www.greentechblog.com/

Weblog offering news and discussions on genetics, molecular biology, bioinformatics and nanotechnology... 

http://www.nodalpoint.org/

Tracking progress to the future especially advanced nanotechnology, nuclear and energy technology, quantum computers, life extension, space technology and AI... 

http://nextbigfuture.com/

Future technological trends and their likely effects on human society, politics and evolution... 

http://www.futurepundit.com/

Open source chemistry weblog, discussing online resources and solutions to computational and practical problems... 

http://usefulchem.blogspot.com/

Weblog of a collaboration encouraging the production and release of open source scientific software... 

http://www.openscience.org/blog/