A cutdown in high-altitude balloon (HAB) parlance refers to detaching ... and you can see here the crude but successful prototype for a reusable cutdown. The archery release [KI4MCW] obtained ...

Have you ever wondered how meteorologists seem to predict the wild swings of weather with such precision? The secret often ...

Talking Shop is our series where we talk to interesting people about their most interesting buys. When it comes to following an eco-friendly lifestyle, Blueland founder Sarah Paiji Yoo doesn’t ...

A reusable hot pack made of a supersaturated sodium acetate solution that crystallizes spontaneously once triggered by a metal piece releases heat. A balloon filled with hydrogen gas also releases ...