For example,experts are still not sure what kind of animals hunt echidnas.

VOA: special.2009.07.07

Jeffrey Olson says experts do not know what will take the place of the plants and animals that are lost, or how wildlife will survive in a changed environment.

VOA: special.2009.09.28

Main message? Each one of us makes a difference every single day we impact the world around us and if we would just think about the consequences of the little choices we make what we eat,wear,buy, how we interact with people,animals, the environment then we start making small changes and that can lead to the huge change that we must have."

VOA: special.2009.11.18

"So when we observe these animals with the replacement joints, what we found was there was regeneration of the entire joint that allowed the animals to resume weight-bearing and locomotion."

VOA: standard.2010.08.11

"I think the larger issue is the psychological torment; animals isolated, kept away from others who can give them companionship, fearing what's going to happen next, and animals living in this constant state of confinement."

VOA: standard.2010.02.16

"We need to recognize at the outset that what we do to animals from their perspective certainly, and probably from ours is morally wrong and unacceptable, and that it's really important to follow through on all these exciting new leads into ways of doing research without using animals."

VOA: standard.2010.02.16

lead author Matthew During of Ohio State University, described what happened after just three weeks, "And what was surprising to us was that the animals in the enriched environment, the cancers are 40 percent smaller" "When we moved that enrichment to six weeks,now, the cancers were approximately a dramatic effect,and not only that, but 17 percent of those animals had no tumors whatsoever."

VOA: standard.2010.07.14