Sidewalks and parks turned into mini safari trails during the City Nature Challenge, a worldwide event where people became “nature detectives.” This year, more than 106,000 participants shared over 3 million observations of living things—like plants, birds, bugs, and mushrooms.
People used an app called iNaturalist to take photos or record sounds of what they found. Then the app and other users helped identify the discoveries, turning lots of small sightings into a big shared list of life in many places.
This kind of counting helps scientists understand biodiversity, which means the variety of living things in an area. If we know what’s in a neighborhood today, we can notice changes later—like when new species appear or when one becomes harder to find.
A careful way to think about this story is to remember that good observations take patience: look closely, listen carefully, and record what you notice. When many people share their findings, it can help build a clearer picture of nature—one photo, sound, or note at a time.
People used an app called iNaturalist to take photos or record sounds of what they found. Then the app and other users helped identify the discoveries, turning lots of small sightings into a big shared list of life in many places.
This kind of counting helps scientists understand biodiversity, which means the variety of living things in an area. If we know what’s in a neighborhood today, we can notice changes later—like when new species appear or when one becomes harder to find.
A careful way to think about this story is to remember that good observations take patience: look closely, listen carefully, and record what you notice. When many people share their findings, it can help build a clearer picture of nature—one photo, sound, or note at a time.