Astronaut Don Pettit took this stunning photo of a nearby comet from the International Space Station ...

1 2 = 1, 1 2 + 2 2 = 5 and 1 2 + 2 2 + 3 2 = 14. If we continue in this way, when is the first time this sum is a multiple of ...

Our readers dig into deep history to answer this one, moving from our last universal common ancestor to the spread of Homo ...

Is there a term for the shape pictured here: a smooth continuous curve with three axes of symmetry? And what happens to our ...

Several factors contributed to the survival of crocodiles, turtles, lizards and birds 66 million years ago, say our readers ...

At his best, Iain M. Banks could be extraordinarily stylish, inventive and downright funny. So how does his genre-redefining ...

A series of events, from the California wildfires to evidence we passed 1.5 degrees last year, suggests wild weather will ...

From windswept craters to frigid ice caps, explore Martian landscapes through the eyes of NASA’s orbiters, probes and rovers ...

Last month, I saw Philippe Parreno’s new work, Voices, which is at the Haus der Kunst gallery in Munich, Germany, until 25 ...

Feedback explores the upsides (and downsides) of Publish or Perish, a game that simulates the experience of building a career ...

This month marks a year since the malaria vaccine rollout began. Here's what we still need in order to beat a disease as old ...

Neurologist Adam Zeman's excellent exploration of the power and complexity of our imaginations literally needs more space to ...