rocket pollution

Destin Sandlin tours United Launch Alliance's rocket factory with CEO Tory Bruno, showing friction stir welding, structural rocket skins and large milled parts.

A very long, detailed look at the A4/V2 rocket turbopump, the steam-turbine-driven twin propellant pump system. It covers the peroxide and permanganate catalysis that drives the turbine. This is part 1 of a series on V2 components.

A 1966 NASA safety film teaching workers how to handle toxic rocket propellants such as hydrazine and nitrogen tetroxide. It explains the hazards of these corrosive, flammable and toxic chemicals and what to do after contamination.

A Channel 4 Equinox documentary on the NK-33 engines built for the Soviet N1 moon rocket and how they ended up in the USA. It includes rare footage and interviews with veterans of the early Soviet space program.

DW Documentary on the roughly 6,300 ships sunk in World War II that are now rusting and leaking oil into the seas. Scientists investigate contamination and the risk of a huge oil spill.

The first episode of Clickspring's series on reproducing the Antikythera Mechanism by hand, laying out the plan and the history. The series follows a machinist building the ancient Greek device with traditional tools and methods.

Veritasium investigates PFAS forever chemicals, from Teflon's history to pollution of the global water system and their presence in the US population. It covers the corporate cover-up and the host's own blood tests.

Chai Jing's 104-minute documentary on China's smog, with full English subtitles. A former TV anchor, she investigates what smog is, where it comes from and what can be done, prompted by her daughter's health problems.

A 1968 NASA film from the US National Archives explaining why the US needed a nuclear rocket and how the engine works. It also shows combined nuclear and chemical stages for a manned Mars mission.

A BBC Four documentary following Alan Bond and Reaction Engines as they pursue the Skylon spaceplane and its SABRE engine. It covers the history from HOTOL and the heat-exchanger breakthrough.

A FRONTLINE documentary on whether efforts to fix plastic pollution made it worse. It looks at the battle over plastics and recycling and how little plastic is actually recycled.

The official trailer for The True Cost, a documentary on the fast fashion industry and who pays for cheap clothing. It touches on garment worker conditions and the Rana Plaza collapse.