Picture a steady breeze blowing through the leaves of a tree. Now imagine these leaves could do more than simply churn in the current of air—what if they could capture the wind and transform it into renewable energy? Energy from …
On 14 September 2015, the universe's gravitational waves were observed for the very first time. The waves, which were predicted by Albert Einstein a hundred years ago, came from a collision between two black holes. It took 1.3 billion years …