Everybody who has tried to stack oranges in a box knows that a regular packing of spheres in a flat layer naturally leads to a hexagonal pattern, where each sphere is surrounded by six neighbours in a honeycomb-like ...

Physics - Soft Matter

12 hours ago not rated yet 0

(Phys.org) —Ocean measurements taken more than 135 years ago during the scientific expedition of HMS Challenger have provided further confirmation of human-produced global warming over the past century.

Space & Earth - Environment

May 23, 2013 4.2 / 5 (15) 19