Earth Day marks the anniversary of the modern environmental movement that started in 1970, reports Earth Day Network.

In the 1970s, Americans were using leaded gas with massive V8 sedans. Unregulated industry polluted the air and land with toxic smoke and sludge. Although mainstream America was oblivious to environmental concerns at that time, the 1962 publication of Rachel Carson's New York Times bestseller "Silent Spring" changed everything, according to the Earth Day Network. The book raised awareness about pollution's effects on the environment, living creatures and public health.

Earth Day's mission is to broaden and activate the environmental movement worldwide using education, public policy and consumer campaigns.

Each year, companies offer freebies, deals and activities to bring awareness to Earth Day, which this year takes place on Wednesday, April 22.

We have compiled a list of companies with free offers and deals this Earth Day:

Earth Day 2015 Freebies

Anthropologie is offering free rainforest crafts for kids on various days. The event is suitable for children ages 5 to 10. Contact your local Anthropologie store for event dates and times, or find your location and event details on their website. Call the store to RSVP.

Free Earth Day Apps: Google Earth for iOS or Android offers an app that celebrates Earth's beauty, plus makes for a great conversation starter about our planets natural wonders. NASA is also offering the "Earth as Art" app for iPad that contains stunning color photos taken by NASA's environmental satellites.

Disney Store is giving away a free Disneynature Monkey Kingdom Reusable Tote Bag if you bring in five plastic bags to your local Disney store. Valid while supplies last. Limit: one per customer.

Evos is offering a free Organic Milkshake on Earth Day. Visit their Facebook page for additional details.

National Parks are offering free entry, plus many activities for kids and families who want to help preserve nature on Earth Day. Visit the National Park Service website for more information.

Weis Markets has free Milkweed Seeds that you and your children can plant to help the Monarch Butterflies with their migration from Mexico to Canada. While supplies last.

Origins is offering a free Eco-Chic Tote and bracelet with any purchase. They will also plant a tree for you with code GOGREEN.

Primary Games is offering a free video game "Recycle" for young children in celebration of Earth Day 2015. Visit the website to play and enjoy other Earth Day-themed games.

Care2.com and Punchbowl are offering a small selection of free Earth Day E-cards. The cards have Earth Day specific greetings and are very pretty.

Amazon is offering a free download of an interactive Earth Day children's storybook called "The Four Seasons."

Earth Day coloring pages are free from apples4theteacher.com.

Earth Day 2015 Deals and Offers

American Eagle in the U.S. and Canada is accepting customers' old denim at any American Eagle Outfitters' 823 store in exchange for a 20 percent discount on a new pair of jeans. The company is partnering with Make It Right, which was founded by Brad Pitt, to recycle used denim into materials to build affordable homes. Learn more on their website.

Caribou Coffee is giving away unlimited coffee refills in April when you buy their Earth Month Tumbler. See their Facebook page for additional details.

Alternative Apparel has a 20 percent off sale for online purchases on Earth Day. Use code EARTHDAY.

Sevenly has a special Earth Day Collection of custom t-shirts that you design. If you purchase one, the company will plant seven trees in honor of Earth Day.

Sears has a 5-20 percent off sale for Earth Day, while Kmart has a 20 percent off sale.

Earth Day 2015 Pet Discounts

In celebration of our Earth and its amazing creatures, Petco is offering up to 40 percent off site wide and PetSafe is offering 10 percent off select items with the code EARTHDAY10. PetSafe's offer is valid through May 1.

Earth Day 2015 Free Activities

We have posted "The Untouched - A Time-lapse Film," which showcases the untouched beauty of U.S. National and State Parks to create awareness about conserving natural resources of our planet. Watch and enjoy.

Sign up at earthday.org to join the largest petition to save the Earth's climate. The petition asks local, national and international leaders to phase out carbon.