trees

within 25 miles

Apr 27, 2026

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University of Freiburg

3Dtrees.earth

Collect data and tools for LiDAR-based forest monitoring

Anywhere

Ongoing

Citizen ScienceEcology & EnvironmentGeographyComputers & Technologycomputer visioninventorymonitoringremote sensingdronesscanningforestlidar

Ancient Tree Inventory

To build a living database of ancient trees

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & EnvironmentNature & OutdoorsBiologytrees, united kingdom

2B Technologies, Inc.

AQTreks (AirQualityTreks)

Monitor air pollution levels and map air pollution around the US

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsGeographyEducationCrowd FundingTransportationEcology & EnvironmentComputers & TechnologyClimate & WeatherChemistryOcean Water Marinedataec2020carbon dioxideglobal warmingair pollutionenvironmental justicescienceair qualityequityparticulate mattersummerair quality indexair pollution monitoringcommunity-based monitoringnatureoutdoorssmartphone applicationhikinginvestigationandroidappclimateexperimentusaairgirl scoutsstemwinterdatabaseenvironmentspringiphonecarbon monoxidecitizen scienceweather dataclimate monitoringmobile applicationweatherbicyclingautumnclimate change

Arizona State Parks & Trails

Arizona State Parks & Trails: Ethnobotany Guided Hike at Red Rock

Red Rock State Park Arizona

Ongoing through April 27, 2026 at 6:59 AM

CommunityGeneral Science

NC State University | ecoipm.org | YourWildLife.org

A Tree's Life

To learn how climate & urbanization affect tree growth & health

Multiple locations, including yours!

Ongoing

Citizen ScienceBiologyEducationClimate & WeatherNature & OutdoorsEcology & Environmentcarbon sequestrationurban ecologytreesclimate change

Cornell University/New York Department of Environmental Conservation

AVID (Assessing Vegetation Impacts from Deer)

Monitor the effects of deer browsing on woodland trees and plants

Multiple locations, including yours!

Ongoing through November 30, 2030 at 8:35 PM

Citizen ScienceAnimalsEcology & EnvironmentNature & Outdoorsforestecologyforest healthdeerseedlingswildlifewoodlandswildflowerstrees

Airigami

Balloon Breakdown

Help compost 40,000 latex balloons

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & Environmentballooncompostingcompostballoons

Northern Rivers Fire and Biodiversity Consortium Inc.

Bell Miner Associated Dieback Best Practice Project

Evaluate the removal of mid-storey density in disturbed forests using prescribed fire, weed control and bush regeneration as a method to restore BMAD affected forest.

Anywhere

Ongoing

Citizen ScienceEducationEcology & EnvironmentBirdsgondwana world heritagelandholdersbell miner associated dieback (bmad)locations of native bell miner coloniesbmad affected forest biodiversitybird monitoring birdsaustraliatree health across the northern rivers region of new south wales treesdata

Zooniverse

Buzzy Bee - African Canopy Pollinators

Study pollination of Central African timber species

Anywhere

Ongoing

Citizen ScienceInsects & PollinatorsEcology & EnvironmentBiologytropical rainforesttree speciespollen dispersal distancespollination flower ecology tree conservation interaction botany insect entomologyfloral traitssize and composition of pollinators communitiescirculating entomofaunatimber species

Casey Trees

To restore, enhance and protect the trees of Washington DC

Multiple locations, including yours!

Ongoing

Citizen ScienceEcology & EnvironmentGeology & Earth ScienceNature & OutdoorsBiologywashington d.c.treescanopyplantingtree planting

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