Calling all environmental bloggers! United Nations Environment Programme (UNEP) and TreeHugger have joined forces to launch a blogging competition for World Environment Day 2011 - and there's less than a week left to enter!

The winner will receive an all-expenses-paid trip to India - the host country for World Environment Day (WED) - to blog on major WED events and celebrations for both the UNEP and TreeHugger websites.

Flights, accommodation, visa costs, insurance, and travel within India to WED events will all be covered.

Entering is easy. Write a blog post of between 400 and 600 words along the theme of "Forests: Nature at Your Service" that will inspire people to take action on World Environment Day. The focus of the blog post should be on any of the many services provided by forests, such as water, food, medicine, clean air, habitats for plants and animals, products like rubber and timber or tourism.

All posts must link to www.unep.org/wed , www.treehugger.com and include a World Environment Day logo or website banner

Then, visit and the UNEP Facebook page facebook.unep.org and leave a message to tell us that you've entered, along with a link to your blog post.

Entries must be received by 10 May 2011.

After winning last year's competition, US blogger Tuesday Phillips travelled to Rwanda to cover the country's WED celebrations.

"Winning the competition was not only a tremendous honor, but a wonderful opportunity", says Tuesday. "I had the opportunity to participate and report on daily press conferences, plant trees alongside thousands of locals for the Billion Tree Campaign, attend the World Environment Day event at the base of the Virunga Mountains, and meet public figures such as the Rwandan Ambassador of Environment and Lands and actor Don Cheadle. Since my visit, I have continued my passion for the environment through my eco-blog, ecolutionist, as well as contribute as a freelance writer on the web and for local newspapers and magazines."

For find inspiration for your blog post, visit the official World Environment Day website at http://www.unep.org/wed

Entrants will be expected to ensure they are able to travel to India during 3 to 5 June 2011.