WALTER has introduced the new XTRACUT XX sanding disc, engineered to deliver unmatched stock removal across all alloys while maintaining consistent results throughout its lifespan. XTRACUT XX offers ...

But what really motivates Mr Trump’s lunge for Arctic land is Greenland’s “rare earths”—a category of materials vital to modern armies and economies. The president is obsessed with these ...

Worse still, at a global scale it requires huge amounts of sand, which is getting harder (financially and environmentally) to mine from coasts, seafloors and riverbeds. An unassuming new material ...