Earth Week: City Nature Challenge Bio-blitz in Alewife Brook Reservation

For the final day of our free Earth Week events Green Cambridge is participating in the Boston City Nature Challenge, join us for this world wide Bioblitz using iNaturalist!

Have fun, contribute to science, and explore nature anywhere, from your backyard to urban forests, while connecting with communities worldwide in the 2026 City Nature Challenge!

Event Details:

• Event: City Nature Challenge Bioblitz in Alewife Brook Reservation
• Location: Alewife Reservation DCR Parking Lot, 2-8 Acorn Park Dr., Cambridge, MA
• Date: April 24th, 2026 , 10:30 AM - 11:30 AM (Eastern Time)

Don't miss this opportunity to connect with nature and one another while discovering the wonders of biodiversity right in your backyard.

Learn more about iNaturalist here!

Learn more about the Boston City Nature Challenge here!

Stay informed and sign up for our Volunteer Interest Form here!

Please arrive with a fully charged smart phone with the iNaturalist app installed, water and weather appropriate clothing.

Know what’s Happening Next — before everyone else does.

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