Where on earth did humans first speak?

According to a 2011 study published in Science, evidence points to language beginning in Africa, which goes along with the very popular "out of Africa" story of human origins.

Octopuses are not warm-blooded animals, yet the speed with which their nerves transmit signals depends on temperature. So how do those that live and move in sub-zero Antarctic waters function just as well as those inhabiting warm, tropical waters? The answer surprised researchers.

Nineteenth-century English poet Alfred Tennyson famously described nature as "red in tooth and claw."¹ But were claws and teeth originally intended to draw blood, or were they used to eat vegetation?

Sir Isaac Newton is recognized by many as perhaps the greatest scientist who ever lived. But few know "that Newton was also a Christian and a Bible scholar."¹ In fact, he wrote more about Scripture than about science, and finally after 300 years, his theological works are now available online for all to see.

The notion that the earth and cosmos are billions of years old continues to present serious problems for evolutionary scientists. For instance, billions of years ago, the sun would only have glowed faintly, leaving nearby earth totally frozen. But with no liquid water on earth's surface, how could life have evolved and become fossilized so long ago?