The Tail of the Agama Lizard

The Agama jumps from a horizontal surface onto a vertical wall with ease. But if that surface is slippery, the lizard loses its footing, yet it still makes a successful landing on the wall. How? The secret is in the lizard’s tail.

When Agamas jump from a coarse surface—which provides grip—they first stabilize their body and keep their tail downward. This helps them to jump at the correct angle. When on a slippery surface, though, the lizards tend to stumble and jump at the wrong angle. However, in midair, they correct the angle of their body by flicking their tail upward. The more slippery the platform, the more the lizard must raise its tail to ensure a safe landing.

Beyonce’s Good Genes

Beyonce’ s good looks are definitely good genes. Here’s a 20-year-old baby faced Bey at the Golden Globes in 2001 (left) and 15 years later ... the flawless singer -- who turns 35 this weekend -- at the MTV VMAs last week (right) .

Oil—How It Affects You

HAVE you ever stopped to think what life for many would be like without petroleum and its products? Oil made from petroleum is used to lubricate motor vehicles, bicycles, strollers, and other things with moving parts. Oil lessens friction, thus slowing the breakdown of machine components. But that is not all.

An Overview of Indonesia

Land Straddling the equator between Australia and continental Asia, Indonesia is the world’s largest archipelago. Most of its more than 17,500 islands feature rugged mountains and dense tropical forests. With more than 100 active volcanoes, it is also the most active volcanic region on earth.

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