It was called SERE, short for Survival, Evasion, Resistance, and Escape. SERE teaches that a fixed-blade knife is one of a soldier’s most valuable tools. It’s so vital that in the early 1980s, Al Mar ...

Myelin is an insulating layer of lipids and proteins surrounding nerves. Myelin damage can cause problems with the nerves’ ability to send and receive electrical messages. Inflammatory disorders ...

Some communities have developed techniques to help them carry heavier loads. Here's what we can learn from them. The rural farm workers of Vietnam could be seen as almost superhuman. Every day ...