Monday links

Animated map of the changing borders and population of Europe: every year since 400 BC.

Why all the actors from Hollywood’s Golden Age have such a distinct and strange accent.

We All Nearly Missed The Largest Underwater Volcano Eruption Ever Recorded.

Wave tank demonstration showing the impact of coastal defenses on flood risk.

Found: Two New Drawings by Vincent van Gogh

Big Brother on wheels: Why your car company may know more about you than your spouse.

ICYMI, Friday's links are here, and include weird vintage beauty hacks, the birthdays of Buffy the Vampire Slayer and Stonewall Jackson (including the story of his left arm's separate grave), how apple pie became "American", and the anniversary of  French King Louis XVI's guillotining.