If you have logged in Google homepage today, you could have saw greenish doodle for earth day. Google made a doodle for the Earth Day – a global celebration that was designed and established to instill awareness and care for the environment.

Earth day was founded by U.S. Senator Gaylord Nelson on April 22, 1970. Many communities celebrate Earth Week, an entire week of activities focused on environmental issues.
Earth Day is celebrated in two different seasons in two parts of the hemisphere. It is done in spring time in the Northern Hemisphere while autumn in the Southern Hemisphere.
This Earth day is co-ordinated by an International organization called Earth Day Network.
Introducing Microsoft Docs for Facebook – Share MS Office files With Facebook Friends
On the Facebook developers conference f8, Mark Zuckerburg announced that Facebook will be launching a collaborative document-editing tool with Microsoft. Over 1500 software developers and FB app developers were present in the conference. You can watch f8 live on Facebook.

Docs.com is a join collaboration of Facebook and microsoft. Built on Microsoft Office 2010, the Docs app enables Facebook users for the first time to create and share Microsoft Office documents directly with their Facebook friends, using the Office tools they already know.
Documents can be created directly within the app, or can be uploaded from your PC. You can share the document with your selected friends or all the friends or with the whole world. Documents can be viewed and edited directly within a web browser – or, with a single click, you can edit them more richly and powerfully through the Microsoft Office software on your PC or Mac.
Docs is currently in limited beta. You can sign up to be notified when it’s available for you to use by connecting your Facebook account.
Docs – Homepage