The American Chemical Society began celebrating Earth Day in 2003. Since 2003, the Committee on Community Activities has chosen an annual theme to give direction and variety to that year’s celebration, but archived materials can be of use during any time of year. In 2018, the program became Chemists Celebrate Earth Week (CCEW) and will be celebrated annually during the week of April 22.
|Year||Dates||Topic||Theme Name - Main Focus|
|2020||April 19-25||Sustainability||Protecting Our Planet Through Chemistry
CCEW 2020 celebrates the 50th anniversary of Earth Day.
|2019||April 21-27||Paper||Take Note: The Chemistry of Paper
CCEW 2019 discusses the chemistry of paper.
|2018||April 22-28||Oceans||Dive into Marine Chemistry
CCEW 2018 explored the chemistry of the ocean.
|2017||April 22||Agriculture||Chemistry Helps Feed the World
CCED 2017 examined the chemistry of fertilizers and grains.
|2016||April 22||Indoor Air||The Great Indoors—Your Home's Ecosystem
CCED 2016 covered indoor air, mold, water, and indoor plants.
|2015||April 22||Atmosphere||Climate Science—More Than Just A Weather Report!
CCED 2015 explored climate science and the role chemistry plays in the environment.
|2014||April 22||Water||The Wonders of Water
CCED 2014 explored the unique properties of water that are crucial for life and a cleaner environment.
|2013||April 22||"Best of" All Topics||Our Earth: Handle with Care!
CCED 2013 incorporated the "best of" all areas from past CCED years (recycling, energy, soil/plants, air, water).
|2012||April 22||Recycling||Rethinking Recycling—It’s Easy to Be Green!
CCED 2012 focused on the three R's: Reduce, Reuse and Recycle.
|2011||April 22||Alternative Energy||Energy—It’s Everywhere!
CCED 2011 examined viable, alternative energy sources as a key aspect of sustainability.
|2010||April 22||Plants & Soil||Plants—The Green Machines!
CCED 2010 covered the chemistry of and uses of plants.
|2009||April 22||Atmosphere||Air—The Sky is the Limit
CCED 2009 informed the public about ways to reduce one’s carbon emissions and thus human’s environmental impact on the planet.
|2008||April 22||Water||Streaming Chemistry
CCED 2008 investigated the Earth’s water supply and how we can better sustain it.
|2007||April 22||Recycling||Recycling—Chemistry Can!
CCED 2007 highlighted recyclable materials, how materials are sorted and ways to reduce, reuse and recycle.
|2006||April 22||Plants & Soil||Dig It!
CCED 2006 explored the layers of the soil, movement of soil and erosion as well as movement of water and nutrients from the soil to plants.
|2005||April 22||Atmosphere||Air—Here, There, Everywhere
CCED 2005 looked at the different types of clouds, their chemical make-up, and their role in the water cycle.
|2004||April 22||Water||What Do You Know About H2O?
CCED 2004 discussed water chemistry with an emphasis on the pH of water and other common substances, including rainwater from the local area.
CCED 2003 emphasized the important role trees play in cleaning our air, as well as the effects acid rain can have on trees in a particular area.