EPA Backs Nanomaterial Safety Research Agency awarded \$4M in grants to study the health, environmental risks posed by manufactured nanomaterials -- invisibly tiny materials revolutionizing many industries but its effects on living things remain unknown.&lt;br&gt;&lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2" color="#666666"&gt;&lt;B&gt;-The Washington Post&lt;/B&gt;&lt;/FONT&gt;