Zunal is a webquest maker (free) that allows you to create your own webquest and share it. You can embed videos and other materials, and you can have more than one person working to create the same one, so it's great for group projects as well. There is a wide variety of already-created quests, or you can make your own. 1, 2, 3, 4, 8, 11, 12, 13, 14
The End of Fossil Fuels: The world is moving toward a 100% renewable clean energy paradigm. There are no technological or economic barriers to replacing all energy production with wind, solar and hydro power; it is just a matter of political will, and of dismantling rigged markets.