Why Is It?

Ticklishness

October 16, 2008

Ticklishness has deep roots in human evolution.

October 9, 2008

Major life stresses can really make your hair fall out.

October 2, 2008

What makes sunburned skin warm to the touch?

September 23, 2008

A listener asks why a baby's eyes can change color during the first year.

September 16, 2008

A listener asks: how many gigabytes could the human brain hold?

September 4, 2008

Why all hairs aren't created equal.

August 28, 2008

Why the mold in blue cheese doesn't make us sick.

August 12, 2008

A listener wants to know why some berries bother being poisonous.

July 30, 2008

A listener asks why some cuts form scars and others don't.

July 16, 2008

A listener asks: is household mold really a health threat?