He estimates that more than one million people worldwide need pacemakers each year.

VOA: special.2010.06.29

He estimates in five years, there could be only 500 or 600 cyclos left.

VOA: standard.2010.06.14

He estimates about 10 percent of wood imports are illegal.

VOA: standard.2010.05.28

He estimates rates in his home state could go up by as little as 0.03 percent to as much as 15 percent, depending on how many customers a utility company has to spread the costs across.

VOA: standard.2010.03.23

Now is the time to deliver on health care." The president said reform proposals which he estimates would cost would provide security and stability to the insured, and make it possible for tens of millions of Americans who are not to get affordable insurance through a proposed exchange system in which private companies would compete.

VOA: standard.2009.09.10

As a plant scientist, he may have saved more lives than anyone else in history as many as a billion, by some estimates.

VOA: special.2009.09.22