Home > Expeditions > North America – From Seals and Sharks to Central Park

We are only now beginning to appreciate the effect of human impact on North America’s complex ecosystems.

The most difficult problems to tackle are those that are hard to see and quantify, like climate change which is affecting humans and wildlife. Changes are happening all around us. Glaciers are melting, dolphins and whales have to survive in increasingly polluted oceans. If we are to understand the consequences of our actions, and to repair ecosystems, we need people like you to help Earthwatch scientists in the field.

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Safeguarding whales and dolphins in Costa Rica

Safeguarding Whales and Dolphins in Costa Rica

Conduct critical research on whales and dolphins in Costa Rica Rendezvous:Puerto Jimenez, Osa Peninsula, Costa Rica $2775 7-9 days Easy

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Uncovering the mysteries of Cororado's ancient basketmakers

Uncovering the Mysteries of Colorado's Ancient Basketmakers

Dig into the archaeology of Colorado’s Basketmaker communities.
Rendezvous:Durango, Colorado, USA $2295 - $3195 7-14 days Easy

Electricity Toilets

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Hunting for Caterpillars in La Selva (Costa Rica)

Climate Change and Caterpillars in Costa Rica

Discover how important caterpillars are to biodiversity Rendezvous:San Jose, Costa Rica $2995 11 days Moderate

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Climate Change at the Arctic’s Edge

Climate Change at the Arctic's Edge

Study climate change where polar bears roam - on the very edge of the Arctic tundra Rendezvous:Churchill, Manitoba, Canada $3885 - $4195 11 days Moderate

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Climate Change at the Arctic's Edge - Teen

Climate Change at the Arctic's Edge - Teen

Exactly how is climate change affecting the Arctic?
Rendezvous:Churchill, Manitoba, Canada $3995 - $4095 11 days Moderate

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Climate Change in the Mackenzie Mountains

Climate Change in the Mackenzie Mountains

The tundra - where eagles soar and caribou roam
Rendezvous:Whitehorse, Yukon Territory, Canada $5795 11 days Moderate

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Costa Rican Coffee From Community to Cup

Costa Rican Coffee From Community to Cup

What's the impact of our consumer choices? Rendezvous:San Jose Call 8 days Moderate

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Costa Rican Coffee From Community to Cup - Teen

Costa Rican Coffee From Community to Cup - Teen

What's the impact of our consumer choices? Rendezvous:San Jose, Costa Rica Call 8 days Moderate

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Costa Rican Sea Turtles

Costa Rican Sea Turtles

Help save leatherback sea turtles from extinction at one of the most important remaining nesting beaches. Rendezvous:Guanacaste, Costa Rica $2895 9 days Very Active

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Research in the Valles Caldera of New Mexico

Encountering the Prehistoric People of New Mexico

Rendezvous:Albuquerque, New Mexico, USA $3125 11 days Very Active

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Volunteer in Boston, USA

Exploring Boston's Urban Forest - Short Duration

Help to discover the value of urban forests
Rendezvous:Cambridge, Massachusetts, USA Call 1 day Easy

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Voluteer in San Francisco, USA

Exploring San Francisco's Urban Forest - Short Duration

Help to discover the value of urban forests
Rendezvous:San Francisco, California, USA Call 1 day Easy

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Common Loon (Gavia immer)

Loons and the Gulf of Mexico Oil Spill

Do something about the worst oil spill in US history. Help research Common loons in the Gulf of Mexico. Rendezvous:New Orleans, Louisiana, USA Call 7-14 days Easy

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Mammals of Nova Scotia

Mammals of Nova Scotia

Monitor mammal populations to determine impacts of climate change and other environmental challenges Rendezvous:Halifax, Nova Scotia, Canada or Cherry Hill Accomodations $1995 - $2995 7-14 days Moderate

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Mammals of Nova Scotia

Mammals of Nova Scotia - Teen

Monitor mammal populations to determine impacts of climate change and other environmental challenges Rendezvous:Halifax, Nova Scotia, Canada $3195 7-14 days Moderate

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Mammoth Graveyard

Mammoth Graveyard in South Dakota

Help piece together life in the Ice Age at a truly amazing mammoth site. Rendezvous:Rapid City, South Dakota, USA $3245 - $3295 15 days Very Easy

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Sustainable agriculture in California's wine country

Protecting the Rivers of California’s Wine Country

Visit vineyards and support sustainable agriculture
Rendezvous:Sonoma County, California Call 7 days Easy

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River Riparian Zone, California, USA

Protecting the Rivers of the California Delta - Short Duration

Help restore waterways of the California Delta
Rendezvous:Davis, California Call 3 days Easy

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Puerto Rico’s Rainforest

Puerto Rico's Rainforest

Trial a cutting edge way to regenerate forests that could provide local income and protect biodiversity Rendezvous:San Juan, PR, USA $2495 10 days Very Active

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Puerto Rico’s Rainforest - Teen

Puerto Rico's Rainforest - Teen

Trial a cutting edge way to regenerate forests that could provide local income and protect biodiversity Rendezvous:San Juan, PR, USA $2700 10 days Very Active

Tent Electricity Toilets

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