serena Add friend

Member since Nov 2009

About serena

I haven't said anything about myself yet.

serena's Activity

serena asked: "Is there anything that makes hydropower not a clean source of energy?" in Hydroelectric
serena asked: "What agricultural chemical that we still use is the most dangerous?" in Agricultural Chemicals
serena asked: "Do motion sensor lights save a lot of energy?" in Bulbs & Lighting
serena asked: "Do you think that we will ever replace the internal combustion engine?" in Cars
serena asked: "Is the City Center in Vegas really green?" in Buildings
Show all serena's: Questions... | Answers... | Comments...

serena's Watched Questions

No watched questions!

serena's Watched Topics

Browse all Topics...

No watched topics!