Share

cover art for #041 - CitSciOz23 | Lila Higgins | Natural History Museum of Los Angeles County | City Nature Challenge

Citizen Science Show

#041 - CitSciOz23 | Lila Higgins | Natural History Museum of Los Angeles County | City Nature Challenge

Season 1, Ep. 41

Lila is an inspiring citizen scientist and one of the main people responsible for starting the City Nature Challenge.


City Nature Challenge

Invented by community science staff, Lila Higgins at the Natural History Museum of Los Angeles County (NHM) and Alison Young and Rebecca Johnson at the California Academy of Sciences (CAS), the City Nature Challenge is an international effort for people to find and document plants and wildlife in cities across the globe. It’s a bioblitz-style competition where cities are in a friendly contest with each other to see who can make the most observations of nature, who can find the most species, and who can engage the most people.


Started in 2016 for the first-ever Citizen Science Day, the community science teams at NHM and California Academy of Sciences dreamed up the City Nature Challenge as a fun way to capitalize on their home cities’ friendly rivalry and hold an event around urban biodiversity. The first City Nature Challenge was an eight-day competition between Los Angeles and San Francisco, engaging residents and visitors in documenting nature to better understand urban biodiversity.

More Information:

https://www.citynaturechallenge.org/

https://nhm.org/


More episodes

View all episodes

  • 167. #167 Roots of the Matter: Why Australia's Urban Trees Are Fighting for Their Lives with Greg Moore

    50:19||Season 4, Ep. 167
    They cool our streets, shelter our wildlife, boost our property values, and quietly keep us sane. So why are we cutting them down for $500?Dr. Greg Moore has spent nearly six decades championing urban trees — as a researcher, as principal of Melbourne's Burnley College, and as one of Australia's most respected voices in arboriculture. In this episode, he makes the case that trees aren't a nice-to-have. They are essential infrastructure. And we are losing them at a rate we will deeply regret.From the 3-30-300 rule to love letters written to Melbourne street trees, from cockatoo citizen science to the surprising power of a significant trees register with zero legal force — Greg covers it all with the calm authority of someone who has been right about this for a very long time.Plus: a simple way to measure your neighbourhood's canopy cover using nothing but your eyes and a clear day at noon.Because the trees around you are worth far more than you think. And so is your voice in protecting them.More Informationhttps://treenet.org/https://www.trees.org.au/https://www.isa-arbor.com/If you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com
  • 175. #175 Coral's Last Chance: How Citizen Divers, Baby Food Science, and Reef Farts Are Rewriting the Future of Australia's Oceans

    30:51||Season 4, Ep. 175
    A two-week holiday. A chance dive. A career that would take her from the reefs of Thailand to the laboratories of Sydney — and back underwater again.Dr. Jen Matthews is a coral scientist on a mission: to understand, feed, and defend reef ecosystems at a time when they need it most. In this episode, she takes us from the unexpected coral frontier emerging in Sydney Harbour, to the Great Barrier Reef where her team is raising baby corals in children's paddling pools, to the cutting edge of reef health science — which, it turns out, involves sniffing coral flatulence.We also explore how you can contribute, whether you're a seasoned diver or someone who's never left the shallows.Because the future of our reefs isn't just in the hands of scientists. It's in yours too.More Information https://sydneycoralproject.com/https://www.uts.edu.au/research/centres/climate-change-cluster/our-research/future-reefsIf you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com
  • 164. #164 “You Can't Just Sit Back”: Graeme Sawyer’s Lifelong Fight Against Cane Toads and Biodiversity Loss

    51:04||Season 4, Ep. 164
    For more than three decades, Graeme Sawyer has been one of the Northern Territory’s most recognisable voices in citizen science and environmental education.A former Lord Mayor of Darwin and founder of Frogwatch NT, Graeme has spent much of his life connecting people — especially children — with the wildlife of the Top End. But alongside the wonder of frogs, wetlands and night walks has come another story: the slow devastation caused by invasive cane toads.Building Frogwatch Through Citizen ScienceGraeme’s path into frog conservation began while developing one of Australia’s earliest multimedia wildlife databases alongside colleague Ian Morris.The project was initially designed for schools and Indigenous communities, helping children identify native animals through photographs and recordings. What emerged was something much larger.“We didn’t know much about frogs or their distribution or anything else in the NT at that point in time,” Graeme said.Frogwatch NT soon evolved into a community-driven citizen science initiative aimed at documenting frog populations and monitoring the spread of chytrid fungus, a deadly amphibian disease threatening frogs globally.The program quickly demonstrated the power of community observation.One evening, university student Jeanne Young arrived at a Frogwatch session carrying a recording of an unidentified frog call. Days later, the group tracked the sound to the Howard River floodplains and discovered what would become the Howard River Toadlet (Uperoleia daviesae), a species previously unknown to science.For Graeme, the discovery reinforced the importance of public participation in environmental research.“It showed me again the value of citizen science — getting the eyes and ears of people tuned into their local environments,” he said.More Informationhttps://watergum.org/tadpoletrapping/https://biodiversitywatch.org.au/?action=main.default&mobile=falsehttps://www.facebook.com/frogwatch.nthaustraliaIf you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com
  • 173. #173 A Voice for the Glossies: How Fifteen-Year-Old Spencer Hitchen Is Inspiring a Generation to Stand Up for Nature

    36:43||Season 4, Ep. 173
    At just fifteen years old, Spencer Hitchen has become one of Australia’s most recognisable young conservation voices — not through political slogans or social media trends, but through patient observation, powerful photography, and an unwavering commitment to protecting nature.From the Wallum woodlands of Noosa on Queensland’s Sunshine Coast, Spencer has transformed a childhood fascination with glossy black cockatoos into a global conservation movement. Along the way, he has launched World Stand Up For Nature Day, contributed to campaigns influencing environmental protections, produced award-winning wildlife photography, and inspired thousands of young people to reconnect with the natural world.But for Spencer, the journey began with a single bird.Falling in Love with the GlossiesSpencer was only six years old when he first joined a local environment group and met a conservationist known as “Glossy Bob”, who had spent more than two decades observing glossy black cockatoos in the Noosa region.Together, they would visit a local waterhole where the cockatoos gathered each evening.Spencer quickly became captivated by the birds — their calls, their behaviours, and the fragile ecosystem that sustained them.“I just fell in love with them,” Spencer said.More Informationhttps://www.instagram.com/savesunriseglossies/https://www.savesunriseglossies.com.au/https://www.facebook.com/savesunriseglossiesIf you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com
  • 166. #166 Protecting Sharks Means Protecting Their Homes: Inside the Global ISRA Project with Rima Jabado and Asia Armstrong

    39:26||Season 4, Ep. 166
    Scientists map the ocean’s most critical shark and ray habitats in a race against extinctionMarine conservationists around the world are racing to identify the ocean habitats most critical to the survival of sharks and rays before it is too late.At the centre of that effort is the Important Shark and Ray Areas (ISRA) project, a global initiative led through the International Union for Conservation of Nature (IUCN) Shark Specialist Group. The project aims to pinpoint the breeding grounds, feeding hotspots and migration corridors essential to sustaining shark, ray and chimaera populations worldwide.For Dr Rima Jabado, chair of the IUCN Species Survival Commission Shark Specialist Group, the project represents a major shift in marine conservation thinking.“It’s not just about protecting the species anymore,” Rima said. “It’s about identifying the places in the ocean that are most important for those species to survive.”Joining Rima on the Citizen Science Show podcast was marine scientist Dr Asia Armstrong, whose work in spatial ecology and threatened species conservation has made her a key contributor to the project.Together, the pair described an ambitious global effort built not only on science, but also on the observations of ordinary ocean users.More Informationhttps://sharkrayareas.org/If you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com
  • 168. #168 Inside the Amphibian ICU: The Fight to Save Australia’s Frogs

    45:49||Season 4, Ep. 168
    A pioneering team blends science, technology and community action to protect one of the world’s most threatened animal groups—amid growing pressure from development.In the forests of New South Wales, a quiet crisis is unfolding—one that scientists say is pushing some of Australia’s most unique frog species to the brink. At the centre of the response is a team of researchers working across laboratories, wetlands and digital platforms, united under an initiative known as the Amphibian ICU.Led by Dr Kaya Klop-Toker, Dr Rose Upton and Dr Alex Callen, the Integrated Conservation Unit is taking an ambitious, multi-disciplinary approach to halt amphibian decline—combining ecological restoration, reproductive science and citizen engagement in what they describe as a “One Plan” strategy for species recovery.More Informationhttps://www.facebook.com/groups/312367045929495/https://www.facebook.com/AussieArkhttps://www.wildlifesydney.com.au/Email the Ministerhttps://protectljtf.good.do/protectthelittlejohnstreefrog/email-the-minister/Littlejohn's Tree Frog Photo Credit: Krishna Pavan KomanduriIf you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com
  • 163. #163 Climbing Into the Canopy: Mark Cashmore on Trees, Technology and the Future of Urban Ecology

    34:50||Season 4, Ep. 163
    A Life That Grew Into TreesFor Mark Cashmore, a career in arboriculture was not a lifelong plan but a gradual evolution. After years of varied work—including teaching English overseas—he discovered tree climbing through weekend work. What began as a practical skill quickly revealed itself as an entry point into a complex and deeply engaging field.Arboriculture is far more than cutting and pruning. It encompasses the long-term care, planning and management of trees, particularly in urban environments. From establishing healthy young trees to shaping entire urban forests, the discipline blends physical skill with ecological understanding.“It’s an astonishing industry,” Mark reflects. “Every tree is different, every day is different.”More Informationhttps://proofsafe.com.au/https://www.treetec.net.au/https://naturetrackers.au/projects/where-where-wedgie/To learn more about Hollow Watch Australia - Citizen Science initiativehttps://proofsafe.com.au/pages/nest_boxes_and_hollowsIf you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com
  • 162. #162 How Citizen Divers Built Sydney’s Living Ocean Trail with Sam Baxter and John Rowe

    29:29||Season 4, Ep. 162
    A grassroots vision beneath the wavesIn a quiet corner of Sydney’s coastline, a chain links more than just concrete anchors—it connects community, conservation, and curiosity. Beneath the surface of Gordon’s Bay lies one of Australia’s most distinctive citizen-led marine projects: an underwater nature trail built not by institutions, but by passionate divers.For Sam Baxter, the ocean has long been a place of fascination. Originally from the UK, Sam’s move to Australia was driven in part by the promise of clearer, warmer waters. After a career in IT, retirement opened the door to deeper involvement in diving and marine conservation.Alongside him is John Rowe, whose connection to the water stretches back to childhood. From snorkelling in a country-town pool to discovering the writings of early diving pioneers, John’s lifelong passion would eventually anchor one of Sydney’s most enduring marine initiatives.More Informationhttps://www.gordonsbayscubadiving.com/https://www.facebook.com/GordonsBaySCUBADivingClubhttps://www.instagram.com/gordonsbayscuba/https://www.youtube.com/@GordonsBay-GBSDChttps://www.sydneydivewreck.com.au/https://www.facebook.com/SydneyDiveWreckIf you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com
  • 169. #169 Turning Curiosity into Science: Citizen Science Month with Dr Jessie Oliver

    27:55||Season 4, Ep. 169
    A National Push for ParticipationAs April unfolds, Australians are being called to step outside, look closer, and contribute to something far bigger than themselves. Citizen Science Month, a global initiative encouraging public involvement in scientific research, is gaining momentum locally—with an ambitious national goal of 100,000 recorded “acts of science.”For Dr Jessie Oliver, Technical Manager at SciStarter Australia, the mission is both simple and transformative: make science accessible to everyone.“An act of science can be contributing to any citizen science project,” Jessie explains. “And the sky’s the limit in terms of what those projects look like.”From logging bird sightings to analysing medical data online, participation can take many forms—united by a shared purpose of advancing knowledge through collective effort.More Informationhttps://www.scistarteraustralia.au/https://www.scistarteraustralia.au/post/citizen-science-month-2026https://www.zooniverse.org/If you enjoy this podcast, please like and subscribe to our show wherever you get your podcasts.Leave us a review and share this show with your friends.It really helps us to reach more citizen scientists, like you.Contact the ShowWe are always looking for more guests to tell us about interesting citizen science projects, research and events.You can email us at: info@citizenscienceshow.com