Warning: These photos — while making you feel like the world's best housekeeper — could also put you off eating for the day.

"Leave it as it is," implored Teddy Roosevelt in 1903. “You cannot improve on it. The ages have been at work on it, and man can only mar it."

These amazing photos of Mars show just how varied — and not so alien — some of the terrain is on the fourth planet.

When elephants are driven from their migratory paths and natural habitats by industrialization, both humans and elephants pay a terrible price.

No country nor space agency has ever touched down on the far side of the moon — until now.

A layer of crisp, powdery snow makes everything just a little more magical — especially when it's in a desert.

These celebrity look-alikes from the annals of history may have you wondering whether everyone from Jennifer Lawrence to Eminem is actually immortal.

Whether flamboyant, miserly, or paranoid, some of history's weirdest people put modern-day eccentricities to shame.

Feast your eyes on these 90s pictures, relics of a simpler time, when people genuinely thought that a Y2K bug would end the world.

The decade that declared "I want my MTV" leaves us full of nostalgia for its fashion, full hair, and killer music.

Life in the 1970s was politically turbulent — and we consoled ourselves with colorful clothes, the wonders of nature, and a dash of sci-fi fantasy.