Rendering Weather in Second Life

Linden Labs announced they have acquired graphics technology from Windward Mark Interactive which will enable them to better simulate atmospheric conditions in Second Life. From Techcrunch:

WindLight uses algorithms that imitate the ways in which light is affected by real-world atmospheric factors like dust and moisture, enabling the nuances of sunlight, clouds, water and weather to be accurately simulated in real-time. Nimble uses advanced physics models to realistically simulate clouds.

[Link to SL announcement]