Another reason for the increase in bird strikes is the growing popularity of air travel in the United States.

VOA: special.2009.04.01

Some Americans had trouble understanding the economic reason why food had to be destroyed so people could have enough to eat.

VOA: special.2011.03.24

But Ms.Smith says the voter registration process may be one reason why young people are less likely to vote.

VOA: special.2010.10.28

One reason is that heat from the sun can go through many of the building materials commonly found in cities.

VOA: special.2010.03.02

The Supreme Court ruled that a huge campaign donation can be reason enough not to judge a case involving the donor.

VOA: special.2009.06.12

In time,however, there was another reason to fight: to free the black people held as slaves in the South.

VOA: special.2009.10.08

A major reason is that the dunes bury any plants in their way as they move across the desert.

VOA: special.2010.01.04

The mind is the collection of activities based in the brain that involve how we act, think,feel and reason.

VOA: special.2010.04.13

Experts say one reason more people are dying from cancer is because more people are smoking cigarettes in developing countries.

VOA: special.2009.03.02

He said the election of a citizen to the office of president should not be a reason for dissolving the Union.

VOA: special.2009.07.16

The female is much smaller. Institute director Steven Monfort has a reason why the clouded leopard may be rare.

VOA: special.2010.06.22

He even said the South had good reason to leave the Union, if northern Abolitionists continued their anti-slavery campaign.

VOA: special.2009.05.07

Omar Abdirashid Ali Sharmarke says the large amounts being paid are part of the reason for the rise in hijackings.

VOA: special.2009.04.25

The delays may be one reason why graduate school applications from international students have slowed for the third year.

VOA: special.2009.06.11