# List of citizen science projects

Citizen science projects are activities sponsored by a wide variety of organizations so non-scientists can meaningfully contribute to scientific research.

## Precis

Activities vary widely from transcribing old ship logbooks to digitize the data as part of the Old Weather project to observing and counting birds at home or in the field for eBird. Participation can be as simple as playing a computer game for a project called Eyewire that may help scientists learn more about retinal neurons. It can also be more in depth, such as when citizens collect water quality data over time to assess the health of local waters, or help discover and name new species of insects. An emerging branch of Citizen Science are Community Mapping projects that utilize smartphone and tablet technology. For example, TurtleSAT is a community mapping project that is mapping freshwater turtle deaths throughout Australia.
This list of citizen science projects involves projects that engage all age groups. There are projects specifically aimed at the younger age demographic like iTechExplorers which was created by a 14 year old in the UK to assess the effects of bedtime technology on the body's circadian rhythm and can be completed in a classroom setting. Other projects like AgeGuess focus on the senior demographics and enable the elderly to upload photos of themselves so the public can guess different ages.
Lists of citizen science projects may change. For example, the Old Weather project website indicates that as of January 10, 2015, 51% of the logs were completed. When that project reaches 100 percent, it will move to the completed list.

## Worldwide

Citizen scientists anywhere in the world can participate in these projects.
| Start | End | Project name | Discipline(s) | Sponsoring organization(s) | Notes |
| 2019 | 2020 | Hubble Asteroid Hunters | Astronomy | Zooniverse, ESA ESDC | Research Paper, Zooniverse |
| 2011 | 2012 | Ice Investigators | Astronomy | CosmoQuest.org | |
| 2011 | 2012 | Moon Mappers: Million crater challenge | Planetary Astronomy | CosmoQuest.org | |
| 2022 | ongoing | Spritacular | Meteorology | NASA, Catholic University of America | |
| 2022 | ongoing | Jovian Vortex Hunter | Astronomy | NASA, Southwest Research Institute, Zooniverse | |
| 2023 | ongoing | Deciphering Secrets: Unlocking the Manuscripts of Medieval Spain | History | University of Colorado, Zooniverse, University of Madrid, European Union's Seventh FPRTD | |
| 2022 | ongoing | Cloudspotting On Mars | Astronomy, Planetary Research, Weather | NASA, Zooniverse | |

## Regional

These projects require that citizen scientists be local to a region of study.

### Asia

| Start | End | Project name | Discipline(s) | Sponsoring organization(s) | Country (or region) | Notes |
| 2012 | 2012 | Citizen Sparrow | Ornithology | Bombay Natural History Society | India |
| 2019 | Un­known | DustBoy | Air Quality, Environmental science | Un­known | Thailand |

### Australasia

| Start | End | Project name | Discipline(s) | Sponsoring organization(s) | Country (or region) | Notes |
| 2010 | 2010 | Big Sleep Survey | Sleep | National Science Week Australia, Australian Broadcasting Corporation | Australia | Big Sleep Survey |
| 2016 | 2016 | South Australia Great Koala Count 2 | Ecology | Discovery Circle, University of South Australia, University of Adelaide | South Australia | |
| 2011 | 2011 | The Multi-tasking Test | Cognitive science | National Science Week Australia, Australian Broadcasting Corporation, Queensland Brain Institute | Australia | Multi-tasking Test |
| 2015 | 2015 | Peninsular Malaysia Butterfly Count | Lepidoptery | Museum of Zoology, University of Malaya | Malaysia | Results published |
| 2012 | 2012 | Sound Check Australia | Audiology | National Science Week Australia, Australian Broadcasting Corporation, National Acoustic Laboratories | Australia | Sound Check Australia |
| 2001 | 2010 | Value of Patient Testimony | Public Health Research | Case Health Pty Ltd Outcomes: (1) eBook: 'Those Who Suffer Much, Know Much' 2010 http://pandora.nla.gov.au/pan/104801/20100925-0000/2010.pdf (2) Spurred significant increase in scientific research into LDN (low dose naltrexone) https://www.ncbi.nlm.nih.gov/pubmed/?term=%22low-dose+naltrexone%22%5BALL+FIELDS%5D+NOT+(dependence%5BTitle%5D)+NOT+(dependent%5BTitle%5D)+NOT+(oxycodone%5BTitle%5D)+NOT+(withdrawal%5BTitle%5D)+NOT+(cocaine%5BTitle%5D)+NOT+(morphine%5BTitle%5D)+NOT+(itch-related%5BTitle%5D)+NOT+(drinking%5BTitle%5D)+NOT+(alcohol%5BTitle%5D)+NOT+(cigarette%5BTitle%5D)+NOT+(smoker%5BTitle%5D)+NOT+(smoking%5BTitle%5D)+NOT+(smokers%5BTitle%5D)+NOT+(nicotine%5BTitle%5D)+NOT+(detoxification%5BTitle%5D)+NOT+(gambling%5BTitle%5D)+NOT+(self-biting%5BTitle%5D) | Australia | Spurred dramatic increase in scientific research |

### Europe

| Start | End | Project name | Discipline(s) | Sponsoring organization(s) | Country (or region) | Notes |
| 2009 | 2013 | BBC Lab UK | Psychology | BBC, BBC | UK | Discontinued in 2018, see BBC Lab UK |
| 1979 | ongoing | Big Garden Birdwatch | Ornithology | Royal Society for the Protection of Birds | UK | Cited to be the world's largest citizen science project |

### North America

| Start | End | Project name | Discipline(s) | Sponsoring organization(s) | Country (or region) | Notes |
| 1997 | 2007 | Birdhouse Network | Ornithology | Cornell Lab of Ornithology | US | |
| 1994 | 2011 | House Finch Disease Survey | Ornithology | Cornell Lab of Ornithology | North America | |
| 2010 | 2014 | Maryland Amphibian and Reptile Atlas | Herpetology | Natural History Society of Maryland, Inc., Maryland Department of Natural Resources | US (MD) | |
| 2015 | 2015 | McMaster Postcard Project | Archives, Social Science, History | William Ready Division of Archives and Research Collections at McMaster University Library | Canada | McMaster Postcard Project |
| 2023 | ongoing | Volunteer Water Quality Monitoring at Elkhorn Slough | Water Quality, Environment | NOAA, California Fish and Wildlife, Central Coast Regional Water Quality Control Board, Monterey County Consolidated Chemistry Lab, Zooniverse | California |