Making a widely read list isn't easy, as not everybody is going to agree with your choices. Since its release last week, Rolling Stone's list of the 100 Greatest Heavy Metal Songs has sparked plenty ...

Using a cone funnel is fairly easy. Fill the top tray with pre-ground material, slide a cone onto the funnel, and thoughtfully pack the cone with a poker rod until full. Once full, carefully push the ...

Thousands of years after the Bronze and Iron Ages, the true Metal Age dawned half a century ago. In 1970, Black Sabbath convincingly evoked the true essence of evil with the lumbering, three-chord ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...