A: Small amounts of aluminum are sometimes included in vaccines as adjuvants, or substances that boost the body’s immune response to the vaccine to ensure protection from infection. That boost means ...

Rust is a natural process — the refined iron is essentially trying to return to its original oxidized, stable state: iron ore.

Engines are incredibly complex pieces of precision engineering. They operate within extremely fine tolerances, with components spinning at thousands of RPM for hours without missing a beat. The key to ...

Imagine leaving your shiny metal bicycle outside in the rain. As water pools on its surfaces, oxygen from the air lingers nearby, and together they begin to quietly attack the metal. The iron in the ...