Snowshoe & Ski Tours

Travel along mountain streams, over ridgelines, and through beautiful valleys in the Aspen area while learning about mountain ecology on ACES' naturalist guided snowshoe tours. Each winter, daily snowshoe tours are offered on top of Aspen Mountain, Snowmass Mountain, and at the Ashcroft Ghost Town. Check back in October for complete information.

Astronomy Night | August

ACES invites you to Hallam Lake this Summer to look up and learn about the night sky! Each evening starts with a 15-minute lesson covering basic astronomy concepts such as life-cycle of a star, reasons for meteor showers, what planets might be visible in the summer, or how phases of the moon work. After the mini lecture we will gather outside for the stargazing portion of the evening for about 30 minutes. Local astronomy enthusiasts, Anna, Ben or Olivia, will be on-hand to guide you through the phenomena of the Summer night sky. 

Please RSVP - each evening is limited to 50 people. This is the last Astronomy Night of the Summer Astronomy Series. We are working on Fall and Winter dates - check back for more information. The evening begins with basic astronomy concepts then focuses on a different specific night sky occurrence before going outside for about 30 minutes.

$5 suggested donation / free for members

Please walk, bike, bus, or carpool to Hallam Lake as parking is very limited.

8/22/2016

8:30PM
Hallam Lake

Jessica Catto Dialogue | Jason Mark

Click here to listen to the live broadcast of this lecture on Aspen Public Radio.

Environmental journalist Jason Mark will present a Jessica Catto Dialogue at the Hotel Jerome in Aspen on Tuesday, June 21st. In the free lecture, entitled "Where in the Wild," Jason will discuss whether there is anything remaining that is still really, truly wild in the twenty-first century. He will explore how to hold onto wildness as a touchstone for our relationship with the rest of nature. 

Jason recently took the helm of Sierra Magazine as the new Editor in Chief and is the former long-time Editor of Earth Island Journal, a quarterly magazine that covers the global environment. His writings have appeared in The New York Times, The Nation, Salon, Scientific American, and The Atlantic, among other publications. His latest book, Satellites in the High Country: Searching for the Wild in the Age of Man, was published by Island Books in October 2015 to high acclaim.

In addition to his notable editing and writing career, Jason is an accomplished advocate for food security and ecological education, and is the co-founder of San Francisco’s largest urban farm, which annually produces more than 16,000 pounds of organic fruits and vegetables that are distributed for free to families in need. 

Please walk, bike, bus, or carpool to the Hotel Jerome as parking is very limited. RSVP does not reserve a seat.

This lecture will be broadcast on Aspen Public Radio through the generosity of the John Denver Aspenglow Fund.

ACES’ Jessica Catto Dialogues honor the environmental legacy of Jessica Hobby Catto through a speaker series featuring visionary thinkers and doers from all realms of environmental concerns. The series is supported by the Catto and Shaw families in Jessica’s memory.

Image via Micah Baird/Sierra Club
6/21/2016

6PM
Hotel Jerome Ballroom

Jessica Catto Dialogue | Michael Curtin

Michael Curtin, CEO of DC Central Kitchen (DCCK), will present a free Jessica Catto Dialogue lecture on August 9th at Paepcke Auditorium in Aspen. The lecture, entitled “8 Rules for Righteous Entrepreneurs,” will explore specific decisions from DCCK’s most challenging situations to illustrate the rules of righteous entrepreneurship and how those rules have created tangible new best practices for social enterprises. 

DC Central Kitchen is America's leader in rebuilding urban food systems through social enterprise programs such as training unemployed adults for culinary careers and reducing hunger with recycled food. When Mike joined DCCK in 2004, he drew on his experiences as an entrepreneur in the restaurant business to fund and launch DCCK’s Nutrition Lab Facility and expand the Kitchen’s social enterprise portfolio from a small catering outfit to include a full-service catering, contract meals, locally-sourced, scratched-cooked school meals, and a wholesale program that delivers fresh produce and healthy snacks to corner stores in Washington DC’s food deserts. These efforts engage local farmers, graduates from the DCCK culinary job training program, area school children, tens thousands of volunteers, local merchants, federal and local governments, private foundations, corporations, and individual investors to create more access to healthy food and feed rural and urban economies while reducing recidivism and community carbon foot prints. DCCK employs over 150 people, including 60 graduates of the Kitchen’s nationally recognized Culinary Job Training Program, which trains formerly incarcerated, addicted, homeless or chronically unemployed individuals. 

As a result of this work centered around food, economic, and environmental justice, DCCK has been featured in the District of Columbia’s “Sustainable DC” Plan. Additionally, DCCK has been honored with the Washington Business Journal’s “Green Business Award for Innovation” (2010), the “DC Mayor’s Environmental Excellence Award,” The DC Chamber of Commerce’s Community Impact Award” (2012), and the 2015 “Grand Prize Golden Carrot Award” from the Physicians Committee for Responsible Medicine, which “recognizes food service professionals doing an exceptional job of improving the healthfulness of school lunches.” 

Mike lives with his wife, Maureen, and their three children, Maeve, Michael III and Ciara, in Falls Church, VA.

Please walk, bike, bus, or carpool to Paepcke Auditorium as parking is very limited. RSVP does not reserve a seat.

ACES’ Jessica Catto Dialogues honor the environmental legacy of Jessica Hobby Catto through a speaker series featuring visionary thinkers and doers from all realms of environmental concerns. The series is supported by the Catto and Shaw families in Jessica’s memory.


Image via Foodtank.com
8/09/2016

6PM
Paepcke Auditorium

Aspen Spring Migration Bird Count

Calling all interested Roaring Fork valley birders to join us for part or all of this citizen science count to record birds in the Aspen area during spring migration. ACES Naturalist Programs DIrector Jim Kravitz, Forest Programs Director Jamie Werner, and bird guide Rebecca Weiss will lead the census explore Hallam Lake, North Star Nature Preserve, and other locations to record sightings of a variety of both migratory and resident birds. The data we record will help monitor trends in avian populations, both locally at Hallam Lake through ACES' phenology studies, and also through eBird, a project of the Cornell Lab of Ornithology and the National Audubon Society.

5:15am – 6:30am: The first segment of the count is an hour-long census at Hallam Lake. Please arrive at ACES' visitor center by 5:15am and enjoy coffee and muffins as we explain how to record the birds we see before spending an hour observing birds throughout the preserve, wrapping up at 6:30am. 

6:45am – Noon: The second segment will follow directly afterward, beginning at 6:45am at ACES' visitor center. We will gather our clipboard and scope, and head out to survey the diverse habitats around Aspen where we will see an array of exciting birds. We will carpool for this portion of the count, concluding at noon at ACES.

Please dress in warm layers with sturdy footwear, and bring hat, sunblock, and snacks. Bring your own binoculars or borrow a pair from ACES.

Free Members
Free Non Members
Ages: For adults (kids ages 12 and up welcome if accompanied by an adult)
5/27/2016

5:15am - 12pm
Hallam Lake

Jessica Catto Dialogue | Jason Mark

Environmental journalist Jason Mark will present a Jessica Catto Dialogue at the Hotel Jerome in Aspen on Tuesday, June 21st. In the free lecture, entitled "Where in the Wild," Jason will discuss whether there is anything remaining that is still really, truly wild in the twenty-first century. He will explore how to hold onto wildness as a touchstone for our relationship with the rest of nature. 

Jason recently took the helm of Sierra Magazine as the new Editor in Chief and is the former long-time Editor of Earth Island Journal, a quarterly magazine that covers the global environment. His writings have appeared in The New York Times, The Nation, Salon, Scientific American, and The Atlantic, among other publications. His latest book, Satellites in the High Country: Searching for the Wild in the Age of Man, was published by Island Books in October 2015 to high acclaim.

In addition to his notable editing and writing career, Jason is an accomplished advocate for food security and ecological education, and is the co-founder of San Francisco’s largest urban farm, which annually produces more than 16,000 pounds of organic fruits and vegetables that are distributed for free to families in need. 

Please walk, bike, bus, or carpool to the Hotel Jerome as parking is very limited. RSVP does not reserve a seat.

This lecture will be broadcast on Aspen Public Radio through the generosity of the John Denver Aspenglow Fund.

ACES’ Jessica Catto Dialogues honor the environmental legacy of Jessica Hobby Catto through a speaker series featuring visionary thinkers and doers from all realms of environmental concerns. The series is supported by the Catto and Shaw families in Jessica’s memory.

Image via Micah Baird/Sierra Club
6/21/2016

6PM
Hotel Jerome Ballroom

Earth Day Celebration & Green Drinks Kick-off

Join ACES, City of Aspen and CORE for a community Earth Day celebration and to ring in the 2016 Green Drinks season! Head to Hallam Lake to meet community members interested in environmental issues, explore the nature preserve, and enjoy snacks and libations. Interactive, Earth Day-themed activities sponsored by a variety of local organizations will include advocacy opportunities, games, giveaways, crafts, and more.

Sponsored Activities include:
ACES - meet the resident Raptors & Earth Day Hats craft
Aspen Historical Society - Sweet Pea (Aspen’s official flower) planting & giveaway
Aspen Skiing Company - TBD
Aspen TREE - Seed-potting craft
Citizens Climate Lobby - contact your representatives station
Clean River Initiative - Tour of Jennie Adair Wetlands & BMP demonstration of water filters
City of Aspen Environmental Health - Air quality activity
Holy Cross Energy - Energy efficiency-themed board game & video game
WeCycle - Obstacle Course  

Presented in partnership with:

  
Free Members
Free Non Members
4/20/2016

5PM - 7PM
Hallam Lake

Astronomy Night | May

ACES invites you to Hallam Lake this spring to learn about the night sky. Each evening starts with a 15-minute mini Astronomy lesson and includes lake-side stargazing. From meteor showers and constellations to planets that are visible while our sky transitions from the winter into summer, there is plenty to look at and learn about this time of year! Local astronomy whiz, Anna Kate Belinski will be on-hand to guide you through the phenomena of the night sky.

Please RSVP - each evening is limited to 50 people. These Astronomy Nights are a part of Winter Astronomy Series with the following 2016 dates: January 25, February 29, and March 21. The evening begins with basic astronomy concepts then focuses on a different specific night sky occurrence before going outside for about 30 minutes.

Please dress warmly! Layers, hat, and mittens are a must. We’ll have hot tea brewing to warm you up afterwards.

$5 suggested donation / free for members

Please walk, bike, bus, or carpool to Hallam Lake as parking is very limited.

5/23/2016

8:30PM
Hallam Lake

Astronomy Night | April

ACES invites you to Hallam Lake this spring to learn about the night sky. Each evening starts with a 15-minute mini Astronomy lesson and includes evening viewing of the night sky. From meteor showers and constellations to planets that are visible while our sky transitions from the winter into summer, there is plenty to look at and learn about this time of year! Local astronomy whiz, Anna Kate Belinski will be on-hand to guide you through the phenomena of the night sky.

Please RSVP - each evening is limited to 50 people. These Astronomy Nights are a part of Winter Astronomy Series with the following 2016 dates: January 25, February 29, and March 21. The evening begins with basic astronomy concepts then focuses on a different specific night sky occurrence before going outside for about 30 minutes.

Please dress warmly! Layers, hat, and mittens are a must. We’ll have hot tea brewing to warm you up afterwards.

$5 suggested donation / free for members

Please walk, bike, bus, or carpool to Hallam Lake as parking is very limited.

4/25/2016

8PM
Hallam Lake

Jessica Catto Dialogue | Thomas Lovejoy

Click here to listen to the live broadcast of this lecture on Aspen Public Radio. Click here to watch a recording of the lecture on ACES YouTube channel.

Renowned tropical ecologist Thomas Lovejoy will discuss his half-century of research in the Amazon in a lecture at Paepcke Auditorium on March 8, at 6:30PM. The lecture, “The Land of Cinnamon and Gold: 500 Years of Amazon Exploration and Science,” is free and open to the public. Lovejoy will present an overview of exploration and science in the Amazon basin from the first non-indigenous navigation of the world’s biggest river to issues of possible die-back today.

Dr. Lovejoy is a professor of Science and Public Policy at George Mason University, as well as an internationally renowned ecologist and conservation biologist who has worked at the interface of science and environmental policy in the Brazilian Amazon forest since 1965. He coined the term "biological diversity" in 1980 and co-created the popular public television program "Nature" in 1982.

Dr. Lovejoy is National Geographic Fellow and serves on the advisory board for the School of Global Sustainability at Colorado State University. He has served as senior advisor to the president of the United Nations Foundation, as World Bank’s Chief Biodiversity Advisor and lead specialist for the Environment for the Latin American region, as assistant secretary for Environmental and External Affairs at the Smithsonian Institute, and as executive vice president of World Wildlife Fund-U.S., and on advisory councils in the Reagan, George H.W. Bush and Clinton administrations. 

Please walk, bike, bus, or carpool to Paepcke Auditorium as parking is very limited. RSVP does not reserve a seat.

This lecture will be broadcast on Aspen Public Radio through the generosity of the John Denver Aspenglow Fund.

ACES’ Jessica Catto Dialogues honor the environmental legacy of Jessica Hobby Catto through a speaker series featuring visionary thinkers and doers from all realms of environmental concerns. The series is supported by the Catto and Shaw families in Jessica’s memory.


Image via bagheera.com
3/08/2016

6:30PM
Paepcke Auditorium
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