Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

This Oakland native is blazing a trail as an extreme-sport influencer, and serving as an example for others who want to leave ...

This tutorial demonstrates how to tie the Double Clove Tresse Friction Hitch, a reliable knot for arborists and tree climbers ...

This video explains how to climb safely using a multicender system, covering key tools like the Rope Runner Pro, Rope Wrench, and Akimbo. Step-by-step instructions, safety tips, and demonstrations ...

The sport doesn’t just have physical benefits—it’s a mental game. “Rock climbing fires every system of the body and mind.” A man boulders to the top of the Aguille de Joshua Tree in Joshua Tree ...

American climber Sasha DiGiulian has become the first woman to free-climb El Capitan's longest route — a journey she said ended up being the "most formative and challenging climb" of her career. "When ...