Hero Image

From Permafrost to Polar Bears: Churchill’s Changing Arctic

© Nat Hab Expedition Leader Leah Pengelly

Science & Impact

The Arctic has warmed nearly four times faster than the global average, and the effects show up quickly. Sea ice forms later. Permafrost softens. Coastlines and wetlands shift. Wildlife adjusts in response. In Churchill, where tundra, forest and Hudson Bay meet, you contribute to the research tracking these changes—following polar bears along the coast, photographing belugas in the estuary and measuring change in the ground beneath your feet.

What You'll Do in the Field

Click a photo to expand details

NAT-HAB-EW-Churchill-Permafrost-Fishback Fieldwork(C) Chris Parkinson (001)

Restore Habitats & Run Field Experiments

NAT-HAB-EW-CH-MomCubs-BeachWalk-pb6115 10 17 25 petr-gheorghe 691797

Observe Animal Behavior

NAT-HAB-EW-Churchill-Permafrost-Fishback Fieldwork(C)EWE(002)-expanded

Assess Habitats & Ecosystems

WEB-NAT-HAB-CameraTrap-Fishback Fieldwork(C) unknown (022)

Deploy Camera Traps

Research Focus

This research focuses on how Arctic ecosystems are changing as temperatures rise, with work centered on permafrost thaw and the spread of forest into tundra. Participants join scientists at long-term monitoring sites near Churchill to measure seasonal thaw, record vegetation change and track where new trees are taking hold. These shifts affect how carbon is stored, how stable the ground remains and how wildlife uses the landscape. The data collected helps scientists understand how quickly the Arctic is changing and what those changes may mean beyond the region.

Document Arctic Climate Change

Measure seasonal thaw and document new tree growth at long-term research sites, contributing data used to understand global climate impacts.

Conservation Impact

Research in Churchill combines long-term climate monitoring with studies on belugas and polar bears, producing data used to guide real-world conservation and management across the Arctic.

  • More than 20 years of climate data used to track how quickly permafrost is thawing—informing climate models and projections that shape global policy

  • Measurements of treeline advance and wetland change used to predict how Arctic habitats will shift, guiding land and ecosystem management

  • Permafrost research helping scientists estimate carbon release from thawing ground—critical to understanding future warming scenarios

  • Long-term datasets that allow scientists to distinguish short-term variation from permanent change—critical for making informed conservation decisions

  • Findings that connect Arctic change to global systems, including climate regulation, sea levels and biodiversity

This research informs the urgent decisions being made in real time about how to manage and protect these Arctic systems as they warm at a rate that’s nearly four times faster than the global average.

Your Role in the Research

On foot near the research station, measure permafrost thaw. Probe the ground to record the depth of the active layer and document soil and environmental conditions across field sites. At the treeline, identify seedlings, record vegetation and compare sites to understand how trees are establishing in open tundra. Each observation contributes to long-term research tracking how the Arctic is changing.

Life in the Field

Days are shaped by weather, wildlife and research priorities. Vegetation research days start on foot, crossing open ground to reach field sites where permafrost and vegetation are measured. Time on the tundra brings long views and steady movement, with pauses for observation—watching a bear at distance or documenting subtle changes in the landscape. Bring your binoculars! Tens of thousands of birds nest in and around Churchill during the late spring and summer, drawn by the rich resources and abundance of water. Afternoons may include data review, discussion with scientists or preparation for the next day’s fieldwork. Evenings gather at the research station, where conversations continue and findings begin to take shape. Keep your eyes skyward, as the northern lights can be visible year-round in Churchill.

Field Conditions

Fieldwork takes place across tundra and boreal forest, accessed on foot and by vehicle. On land, expect uneven terrain and moderate walking over open ground. Activities may involve standing, crouching and working close to the ground. Weather can shift quickly, with cool temperatures, wind and variable conditions. Wildlife sightings vary and cannot be guaranteed. Some days bring close encounters. Others focus on fieldwork. Plans adjust with weather, conditions and research needs. Flexibility is essential.

Questions?
We've Got Answers!
Talk with an Adventure Specialist
Call Our Boulder Office at 800-543-8917 or contact your travel advisor.
arctic-polar-bear-climate-change-travel

Our Trips

Earthwatch Expeditions
Explore Expeditions
Churchill: Polar Bears & Permafrost Costa Rica: Sea Turtles Belize: Sharks Kenya: Mara Ecosystems Iceland: Killer Whales Amazon: Rainforest & River Acadia National Park Costa Rica's Pollinators Arizona's Forest Owls African Wildlife Baja's Marine Life Churchill's Polar Bears Africa's Primates View Nat Hab's Nature Journeys

Questions? Call 800-548-7555

Instagram logo An icon representing Instagram, a social media platform. Youtube logo An icon representing Youtube, a social media video platform. tiktok logo An icon representing tiktok. X logo An icon representing X, a social media platform. Facebook logo An icon representing Facebook, a social media platform.
Contact Us

Have a question or comment?
Click any of the buttons below to get in touch with us.

Hours
Mountain Time

  • 8 am to 5 pm, Monday - Friday

  • 8 am to 3 pm on Saturday

  • Closed on Sunday

Call 800-548-7555
Questions? Click to Chatchat

Please note that on this Make It Private departure we have a minimum group size of ${minGroupSize}.