The enchanted car park

The enchanted car park

Once a hangout for sex workers and drug addicts, a parking lot in Medellín, Colombia, has been reborn as a green haven for all. We meet the ‘social urbanists’ credited with reducing crime – and even temperatures.
The cat that wouldn’t die

The cat that wouldn’t die

The weird paradox of Schrödinger’s cat has found a lasting popularity. What does it mean for the future of quantum physics?

Telescope finds promising hints of life on distant planet

Scientists have found new but tentative evidence that a world orbiting another star may be home to life. A Cambridge team studying the atmosphere of a planet called K2-18b has detected signs of molecules that on Earth are only produced by simple organisms.