One Minute Mentor: Nitrocarburizing in a Carrier Gas

Nitrocarburizing in a carrier gas to which (initially solid) urea was added led to a fast growth of the expanded austenite zone. The gaseous decomposition products of urea that develop in the furnace are highly activating, which means that activation and nitrocarburizing are achieved simultaneously.

How Hot Towers Form Hurricanes

This NASA primer on hot towers shows how warm air gets lifted high above the ocean to power hurricanes and tropical storms.