Happy Earth Day 2011. Although many companies use sustainable business practices every day, companies across the country and around the world still honor Earth Day with special offers, giveaways, volunteerism and new program launches.

Starbucks – Bring your travel mug to Starbucks to receive a free brewed coffee or tea. If you don’t have one, you can save 20 percent if you buy one today.

MXenergy – All new MXenergy customers who signed up for service this week will receive free carbon offsets for one year. If you’re in an MXenergy service area you need to act fast — today is the last day to sign up.

Holland America Line – Holland America Line and the Marine Conservation Institute joined forces to create the cruise line’s new sustainable seafood program. The new program will be implemented first on Alaska and European cruises and then expanded worldwide over the next year.

Whole Foods – Visit your local Whole Foods Market for Earth Day activities. Our local store is giving away $100 in eco-friendly products and swapping conventional cleaning products for an all-natural product.

Nickelodeon – The kids’ network will be airing The Big Help Earth Day event, which includes work on a restoration project in the New Orleans area and ways to get children involved in environmental projects in their communities.

Sprout Watches – Sprout Watches is opening an Eco Pop Up Shop in the SOHO district of New York City today. Local artist MARCOART will be onsite signing limited edition posters and hand-painted watches with proceeds going to the New York Restoration Project. My son has a Sprout Watch and it is definitely the must-have eco accessory for today’s eco-conscious kid.

Alcoa Foundation – Thousands of Alcoa employees around the world will participate in the Alcoa Foundation’s Green Works program, which allows employees to get involved in greening their communities.

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