Chimera cat is one individual organism, but genetically its own fraternal twin. A chimera is typically formed from four parent cells (either two fertilized eggs, or two early embryos that have fused together). When the organism forms, the cells that had already begun to develop in the separate embryos keep their original phenotypes and appearances. This means that the resulting animal is a mixture of tissues and can look like this gorgeous (but bizarre) kitty. It's a cat but the science is…

Chimera cat is one individual organism, but genetically its own fraternal twin. A chimera is typically formed from four parent cells (either two fertilized eggs, or two early embryos that have fused together). When the organism forms, the cells that had already begun to develop in the separate embryos keep their original phenotypes and appearances. This means that the resulting animal is a mixture of tissues and can look like this gorgeous (but bizarre) kitty. It's a cat but the science is…

Fun infographic about the heart valves, part of the incredible cardiovascular machine.

Fun infographic about the heart valves, part of the incredible cardiovascular machine.

Thank you Number 16 on the Periodic Table.

This is interesting and slightly scary at the same time…

The Moai “heads” on Easter Island have bodies. Because some of the statues are set deep into the ground, and because the heads are disproportionately large, many people tend to think of them as just big heads. But the bodies are there — in many cases, underground. What’s even more interesting — there are petroglyphs (rock markings) that have been preserved below the soil level, where they have been protected from erosion. Michael Massaro

The Moai “heads” on Easter Island have bodies. Because some of the statues are set deep into the ground, and because the heads are disproportionately large, many people tend to think of them as just big heads. But the bodies are there — in many cases, underground. What’s even more interesting — there are petroglyphs (rock markings) that have been preserved below the soil level, where they have been protected from erosion. Michael Massaro

What makes the heart beat? Learn about the conduction system, an incredible machine.

What makes the heart beat? Learn about the conduction system, an incredible machine.

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