Is The Great Wall of China Visible from Space?
The idea that the Great Wall of China can be seen from space has been around since at least 1938 and is still popular today. It certainly seems plausible that such a large, linear structure would stand out from the surrounding landscape, but it’s actually not true.
Alan Bean, the fourth man to walk on the moon, said in 1969
“The only thing you can see from the moon is a beautiful sphere, mostly white, some blue and patches of yellow, and every once in a while some green vegetation. No man-made object is visible at this scale.”
But if you can’t see the Wall from the moon, how about somewhere closer to Earth? The International Space Station (ISS) maintains a low earth orbit of between 330-435 km above our planet’s surface.
What Is the Turing Test, and Why is it Important?
It has been reported that a computer program has passed the famous Turing Test by pretending to be a 13-year-old Ukrainian boy called Eugene Goostman. But just what is the Turing Test and why is this development so interesting? Sam investigates.
So You Want to Be An… Archaeologist
Ruth is a professional archaeologist. She spends most of her time below ground, running archaeological excavations on busy construction sites. If you have ever wondered how to become an archaeologist, read on!
Amazing Libraries and Bookstores Around the World
What do you like about going into a bookstore or library? Is it the smell of the books, or the sight of the different coloured spines, waiting to be pulled from the shelf, so that you can dive in?
We have compiled a list of some of the most amazing libraries and bookstores around the world. Some of them you may have heard of, others are less well-known, but all of them made us smile or gasp in wonder. Which one is your favourite, and which library or bookstore would you add to the list?
Real Gabinete Português de Leitura, Rio de Janeiro, Brazil
Real Gabinete Português de Leitura pic by Mathieu Bertrand Struck
A building so remarkable that this one photo cannot hope to do it justice – more pictures here. This is the largest and most valuable collection of Portuguese literature outside of Portugal. The library was constructed between 1880 and 1887 – the facade was carved out of limestone in Lisbon, Portugal and transported by ship to Rio.