Add atmospheric conditions to things MMO Second Life offers. SL's creator Linden Labs has acquired atmospheric rendering tech WindLight and 3D cloud simulator Nimble. WindLight gives 3D environments realistic haze and Nimble creates, well, realistic 3D clouds. Said Linden Lab's Cory Ondrejka:

Our core development team is tightly focused on improving the Second Life experience in terms of stability and scalability, but open sourcing has enabled external developers to integrate additional enhancements that are also hugely valuable; WindLight is one of these.

Sounds good. Bring on the realistic in-world pollution! Brian Ashcraft

Better Haze Coming to SL [Next-Gen]