The University of Arizona: ENR2 Guided Tour
How can we have a lush but water-wise garden in the middle of a densely populated city? Join us at the Environment and Natural Resources 2 Building (ENR2), a LEED... View Article
Free
41 events found.
Events for April 18, 2026
Ongoing
The University of Arizona: Richard F. Caris Mirror Lab Tour
Explore the cutting-edge of astronomical innovation on this 90-minute guided tour of the Richard F. Caris Mirror Lab at the University of Arizona. Learn how pioneering engineering, optical science, and precision manufacturing... View Article
$20 – $25
Tucson Bird Alliance: Mason Center & Arthur Pack Park Field Trip
Join us for an introduction to birdwatching basics at the Tucson Bird Alliance Mason Center. After feeder watching at the Center, stroll across Hardy Rd to Arthur Pack Regional Park... View Article
Free – $5
Tucson Bird Alliance: Explore the Tanque Verde Wash
Birds love riparian (streamside) habitats with native plants, making this location, which is home to both, one of the “birdiest” spots on the east side of Tucson. We’ll explore about... View Article
Free – $5
Tucson Bird Alliance: The Less-Travelled Danny Lopez Park Field Trip
We will walk a route that navigates habitats not normally visited at Danny Lopez Park (formerly Columbus Park) along with touching the traditional spots. This is not an easy ¾ mile walk around... View Article
Free – $5
Rio Salado Audubon Center: Saturday Morning Guided Birding
Join our local bird enthusiasts for a guided bird walk through the Rio Salado habitat! These walks are for everyone: experts, novices, and people who have never gone birding in... View Article
Free
The University of Arizona: ENR2 Guided Tour
How can we have a lush but water-wise garden in the middle of a densely populated city? Join us at the Environment and Natural Resources 2 Building (ENR2), a LEED... View Article
Free
Tucson Bird Alliance: Santa Rita Lodge – Accessible ‘Sit’
Join Marcia OBara for an outing designed for nature lovers with or without accessibility challenges; wheelchairs, walkers, or other assistive devices are welcome. On this trip, we will gather at... View Article
Free – $5
Arizona State Parks & Trails: Guided Bird Walks at Red Rock
Bird enthusiasts join a naturalist for a guided walk appropriate for beginner and advanced birders. Most year-round birds are found in the riparian area next to Oak Creek or along... View Article
Free with Park Fee
City of Tempe: DSLR Photography
You'll never shoot in auto again after learning how to best use concepts like Aperture, Speed and ISO and exploring your camera's buttons and settings. Mix-in discussions about composition and... View Article
$47
Arizona State Parks & Trails: Tsüvó Trail and Diné Point at Homolovi
Join a ranger lead walk on the Tsüvó Loop Trail and Diné Point. This 2-mile-long loop walking trail winds its way through a segment of a high desert prairie of... View Article
Free with Park Fee
The University of Arizona: AP Practice Exam Day
he Center for Recruitment and Retention of Mathematics Teachers (CRR) and the Mathematics Department at the University of Arizona will host the NINETEENTH ANNUAL ADVANCED PLACEMENT MATHEMATICS PRACTICE EXAMS For... View Article
Free
Reid Park Zoo: Sean Kenney’s Nature Pop!
Part art. Part engineering. Totally amazing! Add a pop of wonder and a pinch of nostalgia to your spring with Sean Kenney’s Nature Pop! Marvel at over 40 wildly creative... View Article
Free with Admission
Children’s Museum of Phoenix: Thing-a-ma-jigs
Using recyclables plus a dash of imagination, construct a one-of-a-kind masterpiece.
Free with Admission
Greater Phoenix City Nature Challenge 2026: Nature Observations 101 – Using iNaturalist for the Greater Phoenix City Nature Challenge
Do you like observing nature? Then help science and make your observations count! The City Nature Challenge is a friendly worldwide competition among cities to see whose residents can spot... View Article
Free with Admission
Cave Creek Museum: Kiwanis’ Family Fun Days – Meet a Miner Day
Cave Creek had large gold mining operations during the late 1800’s and early 1900’s. What do you suppose children did if they lived in the gold camp? Come to see... View Article
Free
Chandler Public Library: Ask a Master Gardener @ Sunset Library
nterested on how to start and maintain a desert garden? Wonder no more! Visit the Chandler Sunset Library on 3rd Saturdays between 10 a.m. to Noon to chat with a Master Gardener and... View Article
Free
Tucson Botanical Gardens: How to Create Fantastic Aromatherapy Blends
Join us to learn the secrets of creating aromatherapy blends that both enhance therapeutic effects and smell fantastic together. Certified aromatherapist Kerry Cummins of Catalina Aromatherapy will share a simple... View Article
$29 – $36
Arizona State Parks & Trails: Guided Hike on the Calloway Trail
Learn about hiking safety, and enjoy the scenic surroundings of the Sonoran Desert as you join our park guide to trek the Calloway Trail to an overlook on the face of Picacho... View Article
Free with Park Fee
Arizona State Parks and Trails: Daily Guided Nature Hikes at Red Rock
Every morning, a volunteer naturalist leads a guided nature walk informing visitors about the different life zones of Red Rock State Park. The subjects discussed on this walk may include... View Article
Free with Park Fee
Arizona State Parks & Trails: Apple Packing Shed Open House
Experience a piece of Arizona history. Get an opportunity to explore the Pendley Homestead Apple Packing Shed. A ranger will be available to answer any questions about the homestead's history.... View Article
Free with Park Fee
Arizona State Parks & Trails: Saturday Nature Program
The Nature Program is a live reptile exhibit and the perfect opportunity for people of all ages to learn all about Arizona’s wildlife! Our team of passionate, experienced volunteers are... View Article
Free with Park Fee
Arizona State Parks & Trails: Earth Day Celebration at Red Rock
Join us on Saturday, April 18th from 10 a.m. to 2 p.m. for our annual Earth Day Celebration in Sedona's red rocks! FREE admission from 9:30 a.m. to 1:30 p.m.!... View Article
Free
AI Dev Bootcamp (Session 1)
Session 1 of a 4-part hands-on workshop series for software developers. Learn practical AI-assisted development with Claude Code and AI agents. Scholarships available.
$20
Lowell Observatory: Orbits Curiosity Early Learners Camp – Planets: Terrestrial
Children will learn about the planets closest to our sun through various experiments. Fun and Learning with STEAM Created for children ages 3 to 6, these activity-based, hands-on camps explore... View Article
$20 – $25
City of Tempe: Adult CPR/AED & First Aid
Learn the basics needed to help save a life. Discern between heart attacks, strokes and airway obstruction. Learn to care for burns, cuts, injuries, and more. Training meets OSHA Guidelines... View Article
$52
⭐ Rosson House at The Square PHX: Galaxy STEM Fest 2026
Get ready to blast off into the future at Galaxy STEM Fest! Join us on Saturday, April 18th for our FREE, family-friendly festival celebrating the intersection of STEM and history... View Article
Free
Maricopa County Library District: Teen Craft Club – Dried Flower Bookmarks
Join us at the library once a month to make creative and unique crafts! This month we will be making dried flower bookmarks. Additional crafting supplies and kits will also... View Article
Free
Maricopa County Library District: Night Shift
The day is done and it’s time to unwind and settle in for the night. As the stars begin to appear so does the night shift. You might not know... View Article
Free
Arizona – Sonora Desert Museum: Venomous Creatures of the Sonoran Desert
The Sonoran Desert is home to a wide variety of venomous reptiles and arthropods and myths about them abound, yet only a handful are capable of producing medically significant injuries... View Article
$45 – $50
Arizona State Parks & Trails: Star Party at Kartchner Caverns
oin Kartchner Caverns, an International Dark Sky Park, for a Star Party on April 18 to celebrate International Dark Sky Week! Before night sky viewing through high-powered telescopes begins, listen to... View Article
Free with Park Fee
Embry – Riddle Aeronautical University: Whale Superhighway
Whale Super Highway follows humpback whales and pygmy blue whales on their 4,000-mile migration down the coast of Western Australia to the freezing waters of Antarctica and back again. Whale Super Highway... View Article
$10
City of Tempe: Stark Solder Scientist
Become one of the circuit culprits and learn how to thwart your siblings and friends with an alarm that will go off whenever they open a drawer or door! Be... View Article
$42
Embry – Riddle Aeronautical University: Whale Superhighway
Whale Super Highway follows humpback whales and pygmy blue whales on their 4,000-mile migration down the coast of Western Australia to the freezing waters of Antarctica and back again. Whale Super Highway... View Article
$10
Embry – Riddle Aeronautical University: Whale Superhighway
Whale Super Highway follows humpback whales and pygmy blue whales on their 4,000-mile migration down the coast of Western Australia to the freezing waters of Antarctica and back again. Whale Super Highway... View Article
$10
Arizona Science Center: CREATE – LaterLab
LaterLab is the ultimate playground for innovation, creativity, and connection! Designed for Makers of all kinds, this hands-on space in CREATE at Arizona Science Center® invites you to bring your... View Article
$20
Mt. Lemmon SkyCenter: SkyNights StarGazing Program
Explore the night skies from the summit of Mt. Lemmon using Arizona's LARGEST publicly available telescopes! Under the guidance of a professional, visitors will enjoy a brief astronomy lecture, a... View Article
$62.50 – $88.50
Phoenix Zoo: Girl Scout Night Camp – Outdoor Art
Enjoy badgework activities and games alongside other troops! Girl Scout camps have prepared curriculum for multiple scout levels, plus pre-set dates and sleeping locations. These camps are appropriate for ages 7... View Article
$89 – $99
Arizona State Parks & Trails: Star Party at Cattail Cove
Join us for a star party to explore the night sky at Cattail Cove State Park! We'll be stargazing in the park's boat parking lot to take in beautiful views... View Article
Free with Park Fee
⭐Gilbert Rotary Centennial Observatory: Astronomy Observation
Come view the stars during the Arizona SciTech Festival! Fun for the whole family, located at the Gilbert Riparian Preserve. East Valley Astronomy Club members staff operations and programming for... View Article
Free
Tucson Amateur Astronomy Association: Stargazing at Agua Caliente Park
Viewing Location: Bus Lanes @ North end of Parking Lot Information: Great dark skies in Northeast Tucson. Star Party open to the Public. Cost: FREE. Tucson Amateur Astronomy Association will... View Article
Free