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TZID:America/Los_Angeles
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260102T183000
DTEND;TZID=America/Los_Angeles:20260102T193000
DTSTAMP:20260101T225141Z
CREATED:20260101T225141Z
LAST-MODIFIED:20260101T225141Z
UID:10000906-1767378600-1767382200@abdnha.org
SUMMARY:Lecture: Native Baskets - Function and Art - CANCELLED
DESCRIPTION:THIS PROGRAM IS CANCELLED. \nSpeaker: Robin TenEyck \nWoven baskets have served essential functions in societies worldwide for thousands of years. However\, there is also an artistry to creating beautiful baskets\, and Robin TenEyck has been weaving exquisite ones for many years. In tonight’s program\, Robin displays some of her baskets as well as Kumeyaay and Diegueno baskets from her collection. She also discusses the history of basket making among Southern California’s native people\, and how the arrival of the railroads in California led to a significant shift from utilitarian to decorative baskets\, prompting the establishment of trading posts and a growing interest in collecting baskets for display as artwork. At the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. Register online or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/lecture-native-baskets-function-and-art-cancelled/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2025/12/260102_baskets.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260103T183000
DTEND;TZID=America/Los_Angeles:20260103T193000
DTSTAMP:20251228T165628Z
CREATED:20251228T165628Z
LAST-MODIFIED:20251228T165628Z
UID:10000904-1767465000-1767468600@abdnha.org
SUMMARY:Lecture: Plants of Anza-Borrego Desert
DESCRIPTION:Desert Botany Series \nSpeaker: Don Rideout\, Desert Botany Club \nThis session will inaugurate ABDNHA’s Desert Botany Series with an overview of the plants of the Anza-Borrego Desert and adjacent areas. It is intended for beginners and those who want to refresh their botanical knowledge. The most commonly seen species will be highlighted. Subsequent sessions will focus on specific plant families\, locations\, and topics.  In the ABDNHA Library. Registration required. General Public: $12\, Members: $10\, Volunteers: $8. Register online at abdnha.org or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/lecture-plants-of-anza-borrego-desert-2/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2025/12/260103_Plants.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260107T190000
DTEND;TZID=America/Los_Angeles:20260107T200000
DTSTAMP:20260105T192250Z
CREATED:20260105T192250Z
LAST-MODIFIED:20260105T192250Z
UID:10000916-1767812400-1767816000@abdnha.org
SUMMARY:Lecture: Life in the Borderlands - the History of Crossing the California-Mexico Border
DESCRIPTION:Desert Lecture Series \nSpeaker: Immigration Historian Deborah Kang\, Ph.D. \nIn the early 1900s\, people freely crossed back and forth between California and Mexico because federal immigration laws were not strongly enforced\, and the two sides were often regarded as parts of the same community.  World War I and the Mexican Revolution led to this change\, as strict regulations were imposed amid growing concerns about foreign enemies and immigrants. Residents in the borderlands strongly objected because they relied upon easy crossings for their society\, family ties\, and economy.  Their objections led to enforcement being relaxed once again.  Our speaker tonight\, Deborah Kang\, is an immigration historian who will explain the evolution of laws and practices along the California-Mexico border\, from around 1900 to the present day.  Join us for this lecture at the Borrego Springs Performing Arts Center. The program is free for ABDNHA members\, and $10 at the door for the general public. Seating is first-come\, first-served.
URL:https://abdnha.org/activity/lecture-life-in-the-borderlands-the-history-of-crossing-the-california-mexico-border-2/
LOCATION:Borrego Springs Performing Arts Center\, 590 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2026/01/260107_Borderlands.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260109T183000
DTEND;TZID=America/Los_Angeles:20260109T193000
DTSTAMP:20260106T002752Z
CREATED:20260106T002752Z
LAST-MODIFIED:20260106T002752Z
UID:10000920-1767983400-1767987000@abdnha.org
SUMMARY:Lecture: The Story of the Salton Sea - FULL
DESCRIPTION:THIS PROGRAM IS FULL. \nSpeaker: Dave Blanchet\, (ret.) Hydrologist \nFirst there was the geology\, and then came the flood.  The Salton Sea is located along the San Andreas Fault\, and it is geology that repeatedly created and drained a vast natural lake over millions of years\, called Lake Cahuilla\, in what is now the Imperial Valley. Starting in the 20th century\, agriculture began to flourish in California’s Imperial Valley\, and diversion canals were dug to divert water from the Colorado River into the dry desert.  But the wild nature of the Colorado River soon took the upper hand. Events went horribly awry as record-breaking floodwaters destroyed the manmade dams and canals\, and the full flow of the Colorado River flowed unabated into the Salton Trough for two years. Only through immense effort was the flooding finally stopped\, and the Colorado River returned to its course\, flowing into the Sea of Cortez.  Tonight’s speaker\, Dave Blanchet\, is a retired hydrologist from Anchorage\, Alaska\, and a lifetime member of ABDNHA.  General Public: $12\, Members: $10\, Volunteers: $8. Please register at www.abdnha.org or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/lecture-the-story-of-the-salton-sea-full/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260110T153000
DTEND;TZID=America/Los_Angeles:20260110T163000
DTSTAMP:20251215T173000Z
CREATED:20251206T220713Z
LAST-MODIFIED:20251215T173000Z
UID:10000836-1768059000-1768062600@abdnha.org
SUMMARY:Astronomy Lecture: Fossils of the Solar System
DESCRIPTION:Speaker: Dr. Neil Farber \nJust as fossils on Earth are remnants of past life forms\, there are astronomical fossils in space dating back to the early days of the Solar System\, which may provide insights into how the Solar System and life itself originated. NASA is conducting a multitude of missions to study asteroids\, aiming to enhance our understanding of the Solar System and explore ways to mitigate the threats posed by potential collisions with Earth. General Public: $12\, Members: $10\, Volunteers: $8. You can register online at www.abdnhaorg or at the Nature Center\, 760-767-3098. Held in the ABDNHA Library.
URL:https://abdnha.org/activity/astronomy-lecture-fossils-of-the-solar-system/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2025/12/260110-fossilsofsolarsystem.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260116T183000
DTEND;TZID=America/Los_Angeles:20260116T193000
DTSTAMP:20260108T212316Z
CREATED:20260108T212316Z
LAST-MODIFIED:20260108T212316Z
UID:10000930-1768588200-1768591800@abdnha.org
SUMMARY:Lecture: Leeches\, Land Mines\, and Lizards; The Nature of Researching Nature in Cambodia
DESCRIPTION:Speaker: Lee Grismer\, Ph.D.\, Herpetologist \nJoin world-class herpetologist Lee Grismer as he takes us along on his most recent exploration to find new reptiles and amphibians in Cambodia’s jungles. It became a scientific journey of discovery that placed him right in the middle of an unexpected war between Thailand and Cambodia. As always\, the photography will be award-winning\, as will the stories that go with it. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. You can register online or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/lecture-leeches-land-mines-and-lizards-the-nature-of-researching-nature-in-cambodia-3/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2026/01/lizards.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260117T183000
DTEND;TZID=America/Los_Angeles:20260117T193000
DTSTAMP:20260118T022932Z
CREATED:20251206T215745Z
LAST-MODIFIED:20260118T022932Z
UID:10000828-1768674600-1768678200@abdnha.org
SUMMARY:Lecture: Where it All Began\, El Presidio of San Diego
DESCRIPTION:Speaker: Author and Historian Richard Carrico \nJoin Richard Carrico as he explores Alta California’s first Spanish settlement at Presidio Hill in San Diego. Founded in 1769\, the ruins of the mission and fort are now beneath the landscaped hills in Presidio Park. Carrico’s newly released book tells the stories of those who lived at the presidio\, including the Kumeyaay people. One highlighted story is of Sinusin\, a Kumeyaay woman who married a Spanish soldier and raised her family at the presidio. Carrico’s extensive research draws from Spanish archives\, Kumeyaay oral traditions\, and nearly a decade of archaeological work at the site. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. Register online or at the Nature Center\, 760-767-3098. \n  \n  \n\n  Get Tickets
URL:https://abdnha.org/activity/lecture-where-it-all-began-el-presidio-of-san-diego/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260120T180000
DTEND;TZID=America/Los_Angeles:20260120T193000
DTSTAMP:20260106T001937Z
CREATED:20260106T001937Z
LAST-MODIFIED:20260106T001937Z
UID:10000919-1768932000-1768937400@abdnha.org
SUMMARY:Lecture and Stargazing: Winter Star Clusters
DESCRIPTION:Speaker: Randolph Baron \nIn the winter our night sky is graced by the winter Milky Way and the sky is packed with beautiful star clusters. We will first talk about how these star clusters form and evolve and then head on out to look at some splendid examples. 30-minute lecture followed by stargazing in the ABDNHA garden. In the ABDNHA Library and ABDNHA garden. Registration required. General Public: $12\, Members: $10\, Volunteers: $8. Register online at abdnha.org or at the Nature Center\, 760-767-3098.
URL:https://abdnha.org/activity/lecture-and-stargazing-winter-star-clusters/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture,Stargazing
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260123T183000
DTEND;TZID=America/Los_Angeles:20260123T193000
DTSTAMP:20260119T014131Z
CREATED:20260113T000525Z
LAST-MODIFIED:20260119T014131Z
UID:10000933-1769193000-1769196600@abdnha.org
SUMMARY:Lecture: Flash Floods in Semi-Arid Landscapes - FULL (waitlist)
DESCRIPTION:Special Earth Sciences Weekend! \nSpeaker: Suzanne Walther\, Ph.D.\, University of San Diego \nPROGRAM IS FULL – PLEASE CALL ABDNHA at 760-767-3098 to get on waitlist. \nIt has been said that the two most common ways to die in the desert are from thirst and from drowning. Flash floods are the leading weather-related cause of death in the U.S. and many parts of the world\, and cause billions of dollars in damage. Dr. Suzanne Walther is a fluvial geomorphologist. She studies rivers\, streams\, floods\, sediment movement\, and how the natural flow of water shapes the landscape\, interacts with ecosystems\, and significantly impacts human development. The focus tonight is on flash floods in semi-arid areas\, such as Borrego Springs\, where they can occur\, the conditions that lead to their formation\, the powerful forces they unleash\, their effects on water supply and drought\, and what can be done to mitigate their destructive impact on human development. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. You can register online at abdnha.org or at the Nature Center\, 760-767-3098. \n\n\n  Get Tickets
URL:https://abdnha.org/activity/lecture-flash-floods-in-semi-arid-landscapes-full-waitlist/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2025/12/260123_Flash-Floods.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260124T183000
DTEND;TZID=America/Los_Angeles:20260124T193000
DTSTAMP:20260120T182142Z
CREATED:20251206T215505Z
LAST-MODIFIED:20260120T182142Z
UID:10000821-1769279400-1769283000@abdnha.org
SUMMARY:Lecture: Geology of San Diego County’s Peninsular Ranges
DESCRIPTION:Special Earth Science Series! \nSpeaker: Geologist Don Barrie \nPlease join Mesa College geology professor and ABDNHA board member\, Don Barrie\, for this lecture on San Diego County’s Peninsular Ranges\, with emphasis on the Laguna Mountains west of Borrego Springs. Don’s lecture will focus on how plate tectonic processes have created the complex collage of igneous and metamorphic rocks exposed both regionally\, throughout southeastern California\, and locally\, in the Lagunas. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. A related field trip is scheduled for Sun.\, Jan. 25. \n\nGet Tickets
URL:https://abdnha.org/activity/lecture-geology-of-san-diego-countys-peninsular-ranges/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
ATTACH;FMTTYPE=image/jpeg:https://abdnha.org/wp-content/uploads/2025/12/Peninsular-Ranges.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260130T183000
DTEND;TZID=America/Los_Angeles:20260130T193000
DTSTAMP:20260119T014310Z
CREATED:20251206T215503Z
LAST-MODIFIED:20260119T014310Z
UID:10000808-1769797800-1769801400@abdnha.org
SUMMARY:Lecture: The Urban Ecosystem
DESCRIPTION:Speaker: Rachel Larsen\, Ph.D. \nAs cities around the world continue to grow\, they are increasingly recognized for their potential to incorporate wildlife habitats into the urban environment. Wildlife in cities offers city dwellers a better quality of life by connecting them with nature. Our speaker\, Dr. Rachel Larson\, is a scientist at the San Diego Natural History Museum and an urban ecologist. She will share insights from her research on what makes cities unique ecosystems\, how wild animals are trying to make a living alongside us\, and what it will take better to incorporate nature into the world’s concrete jungles. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. You can register online at abdnha.org or at the Nature Center\, 760-767-3098.\n\n\nGet Tickets
URL:https://abdnha.org/activity/lecture-the-urban-ecosystem/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20260131T183000
DTEND;TZID=America/Los_Angeles:20260131T193000
DTSTAMP:20260120T182313Z
CREATED:20251206T215502Z
LAST-MODIFIED:20260120T182313Z
UID:10000806-1769884200-1769887800@abdnha.org
SUMMARY:Lecture: The Birds of the Salton Sea
DESCRIPTION:Speaker: Kurt Leuschner\, Natural Sciences Professor\, College of the Desert \nJoin expert birder Kurt Leuschner as he tells the fascinating story of the diverse species of resident and migratory birds that live and visit the Salton Sea. In the ABDNHA Library. General Public: $12\, Members: $10\, Volunteers: $8. You can register online or at the Nature Center\, 760-767-3098. \n\nGet Tickets
URL:https://abdnha.org/activity/lecture-the-birds-of-the-salton-sea/
LOCATION:ABDNHA Library\, 652 Palm Canyon Drive\, Borrego Springs\, CA\, 92004\, United States
CATEGORIES:In-Person Lecture
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