Above the Noise host Shirin Ghaffary weighs the potential health risks of drinking energy drinks and compares them to other sugary, caffeinated beverages. Energy drinks are a billion-dollar industry and their popularity keeps growing despite health concerns. We are warned they are particularly dangerous for children and teens -- and there have even been reports of deaths linked to energy drink consumption. In this video we take a closer look at the science to see if energy drinks are really as bad as the hype, and what it is about them that has doctors concerned. A student handout is provided. [4:06]

In this Fuel It! video, Maggie and Mrs. Kissell work together to demonstrate how to create a healthy and tasty after school snack of pitas filled with vegetables and a creamy sauce. [2:58]

This Fuel It! video depicts Katherine and Megan as they make their healthy snack called Apple Canoes for Two. Using apples to represent canoes, the girls use various other healthy ingredients to create their playful yet nutritious snack. [3:32]

There's no single definition of "food insecurity," but we asked people working in food justice to help us understand what it means, including a lack of access to healthy foods, a lack of choice, and families not knowing where their next meal will come from. Race and geography can both contribute to a family's ability to access to healthy foods. Spanish captions and transcript also available. [3:05]

Students practice skills of addition, subtraction, word problems and graphing and develop their own theories about why meat consumption is so different across the world.

Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Describe the process of digestion
Detail the steps involved in digestion and absorption
Define elimination
Explain the role of both the small and large intestines in absorption

By the end of this section, you will be able to do the following:

Discuss the role of neural regulation in digestive processes
Explain how hormones regulate digestion

By the end of this section, you will be able to do the following:

Explain the processes of digestion and absorption
Compare and contrast different types of digestive systems
Explain the specialized functions of the organs involved in processing food in the body
Describe the ways in which organs work together to digest food and absorb nutrients

By the end of this section, you will be able to do the following:

Explain why an animal’s diet should be balanced and meet the needs of the body
Define the primary components of food
Describe the essential nutrients required for cellular function that cannot be synthesized by the animal body
Explain how energy is produced through diet and digestion
Describe how excess carbohydrates and energy are stored in the body

Get the facts about feeding birds. Learn about different types of bird feeders and what to put into them. Next, find out what types of birds come to feeders and some of their characteristics. Finally, familiarize yourself with some of the problems that can arise with bird feeders, as well as learn some tips to combat them. A list of resources completes the discussion.

Student groups compete to design a process that removes the most iron from fortified cereal. Students experiment with different materials using what they know about iron, magnets and forces to design the best process for removing iron from the cereal samples.

Follow along in this Fuel It! video, with Alexis as she makes Chunky Monkey bars using a variety of healthy ingredients such as oats, flaxseed, macadamia nuts and banana chips. [5:56]

Learn about the food movement and how people all across the country are getting involved in growing food, shopping at farmers markets, and advocating for healthy food and food justice for all. [3:47]

Learn how a real middle school student, Anthony Scavotto, and his family struggle to figure out what to eat to be healthy so he can play sports without getting tired, like other kids his age. [2:38]

Learn about how the Western Diet, made up of lots of meat and highly processed foods full of salt, sugar and fat, leads to big profits for food companies and poor health for people. [3:35]

Learn how the discovery of vitamins, while a major scientific achievement, also became a way for the food marketers to convince the public about the next "magic bullet" for optimal health, a trend that continues today. [5:06]