Pascal's triangle, which at first may just look like a neatly arranged stack of numbers, is actually a mathematical treasure trove. But what about it has so intrigued mathematicians the world over? Wajdi Mohamed Ratemi shows how Pascal's...

Silicates are a particularly complex class of minerals that all contain silica tetrahedra. What are the characteristic structures of the last three sub classes of silicates? How are they different from one another?



The 8...