Interview with Dutch climber Jorg Verhoeven after the second free ascent of Dihedral Wall, the difficult big wall climb freed in 2004 by Tommy Caldwell on El Capitan in Yosemite, USA. "Climbing The ...

After 5 days of climbing Jorg Verhoeven has now carried out the first repeat of 'Dihedral Wall' on El Capitan in Yosemite. Until this repeat, carried out together with his wife Katharina Saurwein, the ...

In mathematics, a dihedral group is the group of symmetries of a regular polygon, including both rotations and reflections. What is a dihedral group? In mathematics, a dihedral group is the group of ...

The Jeff Katz and Boston Consulting Group startup Dihedral -- with an assist from two major airlines and four hotel chains -- can turn out to be something huge or meander nowhere like some of the ...

Monday night I wandered into Devotion Gallery in the East Williamsburg area of Brooklyn. The gallery is located on a funny, quiet street, its old storefront façade is quite unassuming and I walked ...