A curious circular structure and a ball court, both from the pre-Hispanic period, have been identified at a newly documented archaeological site in Mexico. The circular structure and surrounding ...

You have probably admired more than once the almost perfect beauty of spider webs. Do you know why they have a circular structure? There are several reasons for this. Today, scientists recognize about ...

Circular Dichroism (CD) spectroscopy is an established analytical technique that probes the differential absorption of left- and right-handed circularly polarised light by chiral biomolecules. In ...

A massive circular structure in the Sahara Desert has puzzled scientists for decades. Spanning 25 miles, it is so large that it can be seen from space. It is known as the Richat Structure, or the Eye ...