Much of the information came from observations made by thousands of volunteers in more than four thousand places over forty years.

VOA: special.2009.05.12

For example, areas with mangrove forests were not damaged as badly by the Indian Ocean tsunami in two thousand four.

VOA: special.2010.04.20

It is an expression used about four hundred years ago by British writer William Shakespeare in his play "Othello."

VOA: special.2010.05.23

The first recorded shooting incident by a person who was a professional gunman took place in Texas in eighteen fifty-four.

VOA: special.2010.03.17

They observed that for every molecule of carbon dioxide taken in by the plants, they lost forty-four percent less water.

VOA: special.2010.01.26

But at this moment, a border tapestry by Flemish artist Pieter van Aelst picturing the four seasons captures your interest.

VOA: special.2010.02.03

At age thirty-eight he scored four goals as his team gave the best performance ever by a team from Africa.

VOA: special.2010.06.09

This year also marks the four hundredth anniversary of the first recorded astronomical observations with a telescope by Galileo.

VOA: special.2009.10.27

A survey last April by the Pew Forum on Religion and Public Life found that fifty-four percent of Americans opposed gay marriage.

VOA: special.2010.02.06

The United States Department of Agriculture will increase spending on farm emissions research by ninety million dollars over the next four years.

VOA: special.2010.01.05

In eighteen sixty-four, the battle at Cold Harbor in Virginia ended a month of fighting by the Union Army of the Potomac.

VOA: special.2009.12.03

The American Academy of Family Physicians says most children stop sucking their thumb by the age of four.

VOA: special.2009.03.11

Chancellor Angela Merkel is defending Germany's decision to cut spending by one hundred billion dollars over four years.

VOA: special.2010.06.25

By comparison, a cup of Starbucks brewed coffee contains three hundred thirty milligrams in four hundred seventy-three milliliters.

VOA: special.2009.07.22