There's basically one: if you're cutting thick steel plate—not aluminum, not stainless. You need a ferrous material or else ...

The dream of a real lightsaber has always sounded like a physics joke, not an engineering brief. Yet a retractable plasma blade that can slice through steel has forced a small Canadian workshop to ...

Tired of your heating bill looking like a car payment? Knock the temp down ten degrees while you're at work. Mike De Socio is a CNET contributor who writes about energy, personal finance, electric ...

The president of Brazil has been pursuing his big plans for the Amazon rainforest, even as parts of it burn in massive wildfires. He has been working to carve more mines and pave new roads. He has ...