The Naked Scientist answers all your questions. Today we received a questions asking why we as humans cry tears, and other mammals don't ?

<p>The Naked Scientist answers all your questions. Today we received a questions asking why we as humans cry tears, and other mammals don't ?</p>

The highlights of Afternoons with Relebogile Mabotja, just in case you missed it.

<p>The highlights of Afternoons with Relebogile Mabotja, just in case you missed it.</p>

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