![dung beetle rolling dung](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Dung_beetle_rolling_dung.jpg?itok=1q-E0DEH)
How to Find a Mate When You Smell Like Dung
STEM Explained
Some dung beetles use alternative reproductive tactics to increase their chances of finding a mate. Learn what this tells us about evolution and biodiversity.
![Monarch Butterfly Monarch Butterfly](/sites/default/files/styles/resource_card_image_360x300_/public/photo-1454047545088-4d599ca277de.jpg?itok=VbTeBLHD)
Insects: Part 3
Picture Collections
20 images of some animals such as ants and mosquitoes that have 6 legs and 3 main body parts consisting of a head, thorax and abdomen
![Ant, showing mandibles Ant, showing mandibles](/sites/default/files/styles/resource_card_image_360x300_/public/6594-1.jpg?itok=GQ0RA1wN)
Insects: Part 1
Picture Collections
10 images of some animals such as ants and mosquitoes that have 6 legs and 3 main body parts consisting of a head, thorax and abdomen.
![monster about to sneeze](/sites/default/files/2019-10/cute-little-monster-going-to-sneeze.jpg)
How does snot work?
Hands-on Activities
Make some fake snot and explore the function of mucus in this fun activity.
![How does sound travel?](/sites/default/files/2019-08/how-does-sound-travel.jpg)
How does sound travel?
Hands-on Activities
Try out this cool activity to hear sound vibrations.
![How does water move up a plant?](/sites/default/files/2019-08/how-does-water-move-up-a-plant.jpg)
How does water move up a plant?
Hands-on Activities
Do an experiment with celery to learn about the structures that help plants take up water.
![How can I stop bananas from turning brown?](/sites/default/files/2019-08/how-can-i-stop-bananas-from-turning-brown.jpg)
How can I stop bananas from turning brown?
Hands-on Activities
Explore the chemistry behind why bananas turn brown. Can chemistry also help prevent this?
![How can I take fingerprints?](/sites/default/files/2019-08/Fingerprint_Whorl.jpg)
How can I take fingerprints?
Hands-on Activities
In this activity learn how to collect fingerprints, about the patterns in fingerprints and why fingerprinting is so useful!
![Image © exdez, iStockPhoto.com](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Image%2C%2C.jpg?itok=ywUpwGCd)
How Can Your Doctor Use the Data in You?
STEM Explained
Scientists are training artificial intelligence to diagnose injuries using x-rays and other medical imagery of you (and millions of others). What improvements and other changes might this bring to the health care system?
![Dinosaur footprint fossil](/sites/default/files/2019-08/313px-Gigandipus.jpg)
How did dinosaurs leave fossils behind?
Hands-on Activities
Using a toy dinosaur and some plaster of Paris, learn how dinosaur footprints could become fossils.
![How do animals hide?](/sites/default/files/2019-08/pexels-cameleon.jpeg)
How do animals hide?
Hands-on Activities
Play a game of hide and seek to discover how animals can hide in plain sight!
![Polar bear and two cubs](/sites/default/files/2020-12/polar-bear-and-her-cubs.jpg)
How do animals stay warm in the winter?
Hands-on Activities
Animals have some unique adaptations to stay warm. Discover what conduction of heat and insulation have to do with staying warm!
![How do I construct a terrarium?](/sites/default/files/2019-08/how-do-i-construct-a-terrarium.jpg)
How do I construct a terrarium?
Hands-on Activities
You can make your own terrarium for growing plants!
![A forest damaged by pine beetles](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/pine-beetle-damage-forest.jpg?itok=rD_omerz)
How Do Introduced Species Affect Ecosystems and the Economy?
STEM Explained
When a species ends up outside of its natural zone, the consequences on other species, ecosystems and human industries can be severe. Climate change and human activities can introduce species into new zones.
![How do movies move?](/sites/default/files/2019-08/how-do-movies-move.jpg)
How do movies move?
Hands-on Activities
Explore the concept of persistence of vision in this hands on activity.