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This guide reviews the life and work of Stephen Hawking and asks students to work individually or in small groups to derive equations and calculate a theoretical amount of Hawking radiation emitted by a black hole.

These discussion prompts cover the biology and chemistry of opioids and ask students to brainstorm strategies for preventing or reversing opioid addiction.

This guide explores a variety of sugars and how they are modified in the body -- as well as how scientists follow those modifications.

Students will learn more about the enzymatic modification of sugars through hydrolyzing sucrose and to build molecular models of fructose, glucose, sucrose and a common artificial sweetener, sucralose.

These discussion prompts ask students about how isotopes can be used to label and track chemical molecules, and about sugars and the enzymes they interact with.

Students will answer questions based on the Science News article "Small intestine is first stop for fructose."

Students will explore how rising carbon dioxide is threatening a lake food web, and will measure how the environment affects the heart rate of water fleas.

In this activity, students will measure the effect of environmental conditions on the heart rate of water fleas.

These discussion prompts cover the pH scale, the solubility of gases, food webs and how organisms react to climate change.

These questions explore past articles about ocean acidification in the Science News archive.

Students will answer questions based on the Science News article "Rising CO2 threatens lake food webs" and an accompanying graph tracking pH.

This guide explores the equivalence prinicple, a foundation of Einstein's general theory of relativity, and the effects of low-gravity space environments on materials and the human body.