The Infernal Machine

Football helmets can prevent devastating injuries, but they may also help make an inherently violent game feel safer than it really is. Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podca ...  Show more

A closer look at the messy, beautiful bricks hiding across Chicago. Subscribe to SiriusXM Podcasts+ to listen to new episodes of 99% Invisible ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus. Hosted by Simplecast, ...  Show more

Dynamite is a type of chemical explosive. Discover how explosives from gasoline to dynamite work in this episode of BrainStuff.

See

In 1846, an Italian chemist discovered the volatile compound nitroglycerine, the first major breakthrough in creating man-made explosions since the invention of gunpowder a thousand years earlier. But almost everyone who experiments with the compound thinks it’s too dangerous for ...  Show more

ATF experts analyzed the scattered remains: a nine-inch-long, one-inch-wide pipe encased in a wooden box, secured with nails, rubber bands, screws, epoxy, three-quarter-inch black plastic tape, and half-inch filament tape. The explosive was two types of smokeless powder packed in ...  Show more

Story One – For Whom the Bell Tolls The German war machine’s efforts to turn the tide of conflict in its favour have given rise to numerous tales involving advanced and dangerous weaponry. But amidst the rumours of alien technology and paranormal experimentation, one story in par ...  Show more