The Environmental Protection Agency (EPA) cracked down on lead-based products—including lead paint and leaded gasoline—in the 1970s because of its toxic effects on human health. Scientists at the ...

Revise the most important concepts, formulas, and numericals from the Electricity chapter with topic-wise notes and expert ...

Quick, predictable, and consistent activities provide a foundation to get students thinking and ready to learn.

Brian Beers is a digital editor, writer, Emmy-nominated producer, and content expert with 15+ years of experience writing about corporate finance & accounting, fundamental analysis, and investing.

Erika Rasure is globally-recognized as a leading consumer economics subject matter expert, researcher, and educator. She is a financial therapist and transformational coach, with a special interest in ...

Long before quantum mechanics existed, a scientist developed a powerful way of describing motion by drawing an analogy between particles and light.

These versatile strategies—from brain dumps to speed sharing—help students track their own progress while informing your next instructional steps.

While it has become a word, laser used to be an acronym: “light amplification by stimulated emission of radiation”. But there is an even older technology called a maser, which is the ...

Were there really unicyclists clearing snow in Somerville, Mass., or was it AI sorcery? An intrepid Boston Globe reporter ...