Persephone, the robot guide, leads visitors in a Greek cave
The robot was built by the National Technology and Research Foundation and cost 118,000 euros ($139,000)
Google Doodle pays shining tribute to Otto Wichterle, the inventor of modern soft contact lens
His innovations paved the way for state-of-the-art medical technologies such as “smart” biomaterials
In violation of Einstein, Black Holes might have…”hair”, according to Greek scientist’s theory
A new study shows that extreme black holes could break the famous “no-hair” theorem, and in a way that we could detect
