![Person in white coat pointing to AI button](/sites/default/files/styles/resource_card_image_360x300_/public/2023-11/ai-drugs-header_GettyImages-1728138175.jpg?itok=TOvsOZAY)
Discovering Drugs with the Help of Machine Learning
Backgrounders
Learn how machine learning is being used in protein drug discovery.
![PET-ase bacteria](/sites/default/files/styles/resource_card_image_360x300_/public/2023-11/PET-ase_GettyImages-1015900130%20%281%29.jpg?itok=6XqyJYdC)
Plastic-Eating Bacteria: Nature's Recyclers
Backgrounders
Learn how bacteria can help solve the world’s plastic problem.
![portrait de Dr. Paula Littlejohn](/sites/default/files/styles/career_image/public/2023-05/Paula%20Littlejohn.jpeg?itok=XB7NJlNJ)
Dr. Paula Littlejohn (she/her)
Career Profiles
Postdoctoral Research Fellow
![Luke Humphries](/sites/default/files/styles/career_image/public/2022-08/Luke%20Humphries.jpg?itok=cmnagxE1)
Luke Humphries
Career Profiles
Director, Process Development
![3D rendering of the human digestive system](/sites/default/files/styles/resource_card_image_360x300_/public/2021-10/human-digestive-system-anatomy.jpg?itok=2hig3KT-)
How Animals Digest Their Food
Backgrounders
Learn about how different animals digest their foods and the organs of their digestive systems.
![Medical staff distributing COVID-19 vaccines](/sites/default/files/styles/resource_card_image_360x300_/public/2021-03/medical-staff-distributing-covid19-vaccine.jpg?itok=oqAfyGaD)
What’s Special About the New COVID-19 Vaccines?
STEM Explained
Learn about viruses, vaccines and why the new COVID-19 vaccines are innovative.
![Human kidney cross-section](/sites/default/files/styles/resource_card_image_360x300_/public/2020-04/human-kidney-cross-section.jpg?itok=3VpDHDAd)
Osmosis and Its Role in Human Biology and Health
STEM Explained
Learn how and where osmosis takes place in the digestive system and excretory system and the role of osmosis in kidney dialysis.
![Nutrition label on the side of a pop can](/sites/default/files/styles/resource_card_image_360x300_/public/2020-03/nutrition-information-on-a-can.jpg?itok=4o0ZthQc)
The Science Behind Calories and Nutrition Facts Labels
STEM Explained
Find out how scientists figure out the information on food nutrition labels and why that information can help to keep you healthy.
![Looking at a donut and a brain through a magnifying glass](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/human-brain-with-donut.jpg?itok=sDa9et9m)
How Sugar Affects the Brain
STEM Explained
Consuming sugary foods and drinks activates your brain’s reward system - the same system that can cause addiction.
![Browning apple](/sites/default/files/styles/resource_card_image_360x300_/public/2020-03/Browning_apple.jpg?itok=0ChBaFX8)
Why Do Apples Turn Brown After You Cut Them?
STEM Explained
Has your fresh juicy apple turned an unsightly brown? Learn about the redox reaction behind the transformation.
![Bread and wheat with a warning sign](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/gluten-intolerance-with-bread-and-wheat.jpg?itok=Ytq99uNA)
Celiac Disease: When You Really Need to Stay Gluten-Free
STEM Explained
Celiac disease is an autoimmune disorder. Gluten triggers an immune system response, seriously affecting nutrition.
![https://aWhy are peas and corn classed as starches on food guides?www.pexels.com/photo/agriculture-bright-cereal-close-up-547263/](/sites/default/files/2019-08/pexels-corn.jpeg)
Why are peas and corn classed as starches on food guides?
Hands-on Activities
Learn how test foods for starch.
![Why do oil and water not mix?](/sites/default/files/2019-08/why-do-oil-and-water-not-mix.jpg)
Why do oil and water not mix?
Hands-on Activities
What chemistry determines how oil and water behave when mixed? Explore the mixing of oil and water and the density of liquids in this activity.
![Arctic pack ice](/sites/default/files/styles/resource_card_image_360x300_/public/2021-03/arctic_ice_pack.jpg?itok=-rJJdc-Q)
Why Don't Fish Freeze in Cold Arctic Waters?
STEM Explained
Ever wonder how fish survive in the cold waters of the Arctic and Antarctic? It’s partly because of a brilliant evolutionary adaptation.
![What is the best way to clean up an oil spill?](/sites/default/files/2019-08/what-is-the-best-way-to-clean-up-an-oil-spill.jpg)
What is the best way to clean up an oil spill?
Hands-on Activities
Learn about the properties of materials and the challenges of cleaning up an oil spill in this activity.