Hydrogen is the most abundant element in the universe, but it's not all that useful as a gas. Two scientists say they've coaxed it to become a metal, which could be used in ways that would radically change our lives.
Carbon is one of the most versatile materials in the universe, forming everything from the graphite found in the pencils to hard, sparkling diamonds. But three new forms of carbon might make even the most breathtaking diamond look impossibly dull.
A hundred years ago next week, superconductivity was discovered. Now we know electric charge can flow through ultra-cold objects without resistance. How better to celebrate this anniversary than with an awesomely crazy idea about ultra-hot superconductors forming in deep space?