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3R's AIDS airplane history All Our Uncles are Monkeys Day America Recycles Day animals apples arboretum arboretums autumn Autumn Equinox aviation bathtub Bathtub Party Day bears beef cows bird count bird day birds Brain Day breastfeeding Car Free Day carl sagan Carl Sagan's Birthday cars cars and co2 cat cats chaos Chaos Never Dies Day chaos theory Chemist Dmitri Mendeleev Birthday Chemist John Polanyi Birthday Chemist Robert Boyle Birthday chemistry circle math circles compass computer language computer science Computer Science Education Week Computer Security Day computers conservation Copernicus coral reef Coral Reef Awareness Week coral reefs Cow Appreciation Day cows cranberry creatures cryptozoology curious events Curious Events Day dairy cows Darwin Darwin Day Day Against Nuclear Tests Day diabetes different colored eyes Different Colored Eyes Day disabilities disease dmitri mendeleev dog dogs Earth Earth Science Week Eat a Cranberry Day Eat a Red Apple Day Egyptian pharoah Embrace Your Geekness Day endangered species engineers evergreens evolution Evolution Day Fall felines ferris wheel Ferris Wheel Day festival of sleep day first plane fossils fringe science fry an egg on a sidewalk Galileo Galileo's Birthday geekness day geeks Geologic Map Day Grav-Mass Day Great Backyard Bird Count groundwater habitat habitat reduction hagfish Hagfish Day handwriting Handwriting Day herbs HIV HIV/AIDS Aging Awareness Day hunger infant nutrition insulin International Civil Aviation Day International Day for Disaster Reduction International Day for the Preservation of Ozone International Day of Persons With Disabilities International Left-Handers Day International Literacy Day inventor inventors Isaac Newton Isaac Newton's Birthday john polanyi Kid Inventor Day kid inventors King Tut King Tut Day Kite Flying Day kites learning math left hand left-handedness lighthouse literacy Look for an Evergreen Day look for circles day Louis Pasteur's Birthday Maritime day Marooned Without a Compass Day Mars math Math Storytelling Day metric metric system mice microbes mole moon Moon Day More Herbs Less Salt Day mouse mousetrap cars National Bird Day National Chemistry Week National Create a Vacuum Day National Dog Week National Engineers Week National Fossil Day National Inventors' Day National Lighthouse Day National Metric Week National Mole Day National Potato Day National Science Day National Space Week National Threatened Species Day - Australia National Tree Day - Canada National Tree Day-Australia National Weatherman Day National Wildlife Day native americans natural selection Neil DeGrasse Tyson Neil DeGrasse Tyson's Birthday niche Nicolaus Copernicus Birthday nuclear science nuclear tests number 17 nursing occult Occult Day oceans ozone ozone depletion peace peace and development Penguin Awareness Day penguins physics polar bear Polar Bear Day population population crisis potato poverty power of 10 Power of 10 Day prehistory primary math Programmer Day programming protect your groundwater day Race Your Mouse Day reading recycling red apple Red Planet Day rivers robert boyle root vegetables Roots Day salt replacement science Science Day for Peace and Development security Sidewalk Egg Frying Day sleep space space week special properties of number 17 statistics stay out of the Sun Day STEM Sun Day T.V. television thermodynamics threatened species tree day trees vacuum virus Virus Appreciation Day viruses water water quality water resources weather weatherman wetlands wild cows wildlife wildlife conservation Winter Solstice world aids day world animal day World Brain Day world breastfeeding week World Cat Day World Diabetes Day World Food Day World Habitat Day World Humanitarian Day World Indigenous People's Day World Maritime Day World Population Day World Rivers Day World Statistics Day World Television Day World Tree Day World Water Monitoring Day World Wetlands Day World Wildlife Conservation Day Wright Brothers Day Yellow Pig Day