OSLO, Norway (AP) — Olympic ski cross medalist Audun Groenvold has died after being struck by lightning, the Norwegian ski federation announced Wednesday. He was 49.

A classification algorithm based on LBP and local binary differential excitation pattern is presented for the classification of the crack and the linear mineral line on the surface of the birch veneer ...

Paradoxically, it’s not easy – getting the strumming pattern to sound natural when you’re starting off as a guitar player is really hard.