GrrlScientist: What do moldavium, the second world war and Easter egg hunts share in common?

GrrlScientist: What do pearlescent lipsticks, fishing weights and Pepto-Bismol share in common?

GrrlScientist: What do felt hats, tuna and St Isaac's cathedral have in common?

GrrlScientist: What do sunrises, meteorites, and the Philosopher's Stone have in common?

GrrlScientist: What do the international kilogram prototype, black pigments and the KT extinction have in common?

GrrlScientist: What do pen tips, electron microscopy and dinosaurs have in common?

GrrlScientist: What do aircraft engines, a particular Russian volcano and the river Rhine have in common?

GrrlScientist: What do mobile phones, hip replacements and the Democratic Republic of the Congo have in common?

GrrlScientist: What do microchips, nuclear power plants and Copenhagen have in common?

GrrlScientist What is the most expensive metal in the world?

What do skin rashes, earthquakes and Sweden have in common?

What do dental x-rays, YAG and Tim have in common?

What do Sweden, aspirin and fluorescent lamps have in common?

What do Finland, compact disks and lichen have in common?

what do cathode ray tubes, "Blue John" and moon rocks have in common?

What do firefighters' uniforms, lighters and magnets have in common?

What do vanishingly rare elements, distant peculiar stars and Greek legends have in common?

What do camera lenses, pool care products, and hydrogen sponges have in common?

What do green fireworks, enemas and Shakespeare's "Hamlet" have in common?