Where do climate change and Sudoku come together? At your weekly green tech finds, of course…

• What’s the best computer out there for a student in Cambodia? One that sips energy… and the Open Institute has installed 400 such computers for Cambodian students and teachers.
  
  
• Water heats and cools new classroom building: Michigan’s Saginaw Valley State University showed off its new Health and Human Services building yesterday, which features the state’s largest aqua-thermal heating and cooling system.
  
  
• Green Sudoku? GOSUB 60’s new “Sudoku Deluxe Green Edition” (for Blackberry, iPhone, and others) allows players to collect points and use them to plant trees. (via TMCnet Green Technology)
  
  
• Want to see what climate change might look like? Google Earth is launching a new series of layers showing “…potential impacts of climate change on our planet and the solutions for managing it.” See the introductory video (narrated by Al Gore) above. (via EcoGeek)
  
  
• Because everything’s big in Texas: E.ON Climate & Renewables (EC&R) announced the completion of one of the world’s largest wind farms around Roscoe, Texas. (via CNET Green Tech)
  
  
• California mandates cool cars: By 2012, the state has mandates that “vehicle windows must prevent 45 percent of the sun’s total heat-producing energy from entering the interior and the windshield must reject at least 50 percent.” (via Cleantechnica and Greencar.com)
  
  
• Got flowing water? Make electricity!: The Hydro-Electric Barrel uses a simple design to make micro-hydro power generation more efficient. (via Blue Living Ideas)
  
  
• Will “radical collaboration” produce the world’s coolest green iPhone app? That’s what 3rdWhale and GenGreen hope as the one-time competitors merge to form GenGreen Digital Media.
  
  

Got other green tech news? Let us know… share it in the comments.

So you’re a fan of the Sundance Film Festival, but life’s just too hectic to open a web site every day.  Have no fear – we’ve got the solution for the Blackberry and iPhone crowd (or anyone else who likes to keep up to date).  Every day during the festival, we’ll be sending an email rundown of all the latest happenings at Park City, from the premieres to the parties and everything in between.  Here’s how to sign up:

1. Log in to your Sundance Channel account by visiting http://www.sundancechannel.com and clicking “log in” in the top right corner.  (If you’re not yet a member, you can sign up by clicking “join” instead.)

2. Click “my profile” in the top right corner to access your membership profile.

3. Check the box next to “Festival Updates”, click “save” and you’re done!