In a separate project, scientists identified seven new species of bamboo coral in deep waters near the Hawaiian Islands.
VOA: special.2010.08.10
The researchers have developed a way to make genetic changes in the three mosquito species known to spread malaria.
VOA: special.2009.12.22
Because the canyon's environments are so different, these species did not spread beyond the canyon, or even far within it.
VOA: special.2009.10.07
These pictures show young readers what led Darwin to form his great discovery: the evolution of species through natural selection.
VOA: special.2009.02.27
Darwin had been working on his theory for over twenty years when he published " On the Origin of Species."
VOA: special.2009.12.01
Lead author Beth Polidoro works for the Global Marine Species Assessment Unit, based at Old Dominion University in Richmond,Virginia.
VOA: special.2010.04.20
He told her his ideas about how species evolve over time -- what he called the transmutation of species.
VOA: special.2009.02.25
It says that nearly one third of about eight hundred bird species in the United States are threatened in some way.
VOA: special.2009.05.12
She says the good news in the study is that some species of mangrove can be reforested relatively easily.
VOA: special.2010.04.20
As a result,the report says, the rate of plant and animal species disappearing is continuing faster than ever before.
VOA: special.2010.05.25
Seventy-one bird species have disappeared forever since people first arrived on the Hawaiian Islands one thousand seven hundred years ago.
VOA: special.2009.05.12
One of the rarest species of mangrove tree grows in just a few places in East Asia and India.
VOA: special.2010.04.20
It is a place where plants and animals from the Caribbean Sea share an ecosystem with native North American species.
VOA: special.2009.06.30
They are home to millions of species of sea life that depend on coral reefs for their survival.
VOA: special.2010.08.10
应用推荐