Mystery Theme #1 by PolinskyL

What safety feature, introduced for planes in the late 1920s and cars in the early 1970s (and recently made mandatory for cars in Europe and the US) also significantly decreases (by as much as a third) the incidence of deadly motorcycle crashes?

The RAF's 4000-lb "Cookie" was also known by what alliterative 2-WORD NAME? In a show business context, the two words are antonyms.

Usage of the word sunwise has declined precipitously since the invention and near-universal adoption of WHAT DEVICE?

In game theory, it is a game, somewhat in contrast with the Prisoner's dilemma, where the mutually beneficial solution is the dominant solution. In computer programming, it is an error where two processes each wait for the other to finish. What is it?

A country which has been in the news recently has a tendency (when its name is mispronounced) to bring to mind a certain early-80s song, the biggest hit released by WHAT BAND?

What Austrian MANUFACTURER was an early innovator in the use of non-metal materials in pistols?

Before it changed its name to "End of Life Choices", the US organization seeking to expand the legal status of physician-assisted suicide was known by WHAT NAME?

Calisto and Caliban are among the mutants referred to by WHAT COLLECTIVE NAME in the X-Men universe, as a tribute to the subterranean race in H.G. Wells' The Time Machine?

What FISH, often used in imitation crabmeat, is also used most often in McDonalds' Filet-O-Fish sandwiches?

On the Amazing Race, this is a task that only one team member may perform.

What CHARACTER says "If you prick us, do we not bleed?"

Perhaps appropriate for a dead language, WHAT AUTHOR'S name features prominently on the cover of many commonly-used Latin textbooks, even though he's been dead since 1987?