1. And baby toupees, for those sensitive about hairlessness.

2. The skin quality around the knee region includes hairlessness, relatively thin dermis and thin adipose layer.

3. Chimpanzees and humans are fairly close cousins, evolutionarily speaking. But a new study finds they lack something that we have (besides written language and hairlessness): a desire to work together.

4. THE EVOLUTION OF SKIN PIGMENTATION is linked with that of hairlessness , and to comprehend both these stories, we need to page back in human history.

5. But a new study finds they lack something that we have (besides written language and hairlessness): a desire to work together.