A giant egg equipped with rotors and "Transformers"-style robots are among some of the creative designs submitted in a $2 million dollar contest to dream up new ways of flying. A giant egg equipped ...

From the first fragile biplane to stealth bombers that defy radar, humanity's quest to conquer the skies has produced some ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...