And,it explains how life on land depends on life in the ocean.

VOA: special.2009.04.03

He explains that as the water freezes, it produces heat,and the ice forms a protective blanket around the tree.

VOA: special.2010.01.12

Jim Tedder explains. "It Might Get Loud" is a film about three generations of guitar superstars: Jimmy Page,the Edge and Jack White.

VOA: special.2009.08.07

Researcher Charles Haynes explains what it says.

VOA: special.2009.12.24

He explains how it feels to have reached that goal. "It's truly an exciting point in my life."

VOA: standard.2010.04.09

It is free,". Summers explains every worker in the country pays for it through a national insurance tax.

VOA: standard.2009.09.24

"In the Philippines and all over Asia, fertilizer has been overused and misused because no one explains to them how much they need or how to use it."

VOA: standard.2010.07.28