Seven signs of evolution in action

Publication:   Date: February 11, 2009   View Article

Scientists around the world are celebrating the 200th birthday of British naturalist Charles Darwin, who was born on Feb. 12, 1809. Darwin’s groundbreaking 1859 book, “The Origin of Species,” proposed the theory that species evolve over time through the process of natural selection. Check out seven signs of evolution in action.

Grizly-Polar Bear Hybrid Found – But What Does It Mean?

Publication: National Geographic News   Date: May 16, 2006   View Article

The animal confirmed last week to be half polar bear, half grizzly bear is certainly weird, scientists say, but he’s not necessarily a symbol of global warming or anything else.

Last week, DNA analysis confirmed that the bear’s father was a grizzly and his mother was a polar bear.

African Pygmy Hunt Threatened by Logging, Animal Trade

Publication: National Geographic News   Date: June 3, 2005   View Article

Rampant logging and the illegal trade in forest animals is slowly eroding the traditional lifestyle of the Bayaka Pygmies in the Central African Republic, according to researchers.

The Bayaka are a seminomadic people who traditionally survive by hunting and gathering the animals and plants of the rain forest. Among their more revered traditions are the net hunt and its associated musical ceremony.

Rare Antelope on Brink of Extinction, Scientists Say

Publication: National Geographic News   Date: April 25, 2003   View Article

Male saiga antelopes face a serious problem that threatens to push them over the brink of extinction: so many females, so little time.

The global population of this antelope, native to the steppes and deserts of Central Asia and the Pre-Caspian region of Europe, has fallen by 80 percent to approximately 50,000. In the mid-1970s, the peak population was more than 1,250,000. Of the saiga antelopes that remain, most are female.

A Reason to Give Thanks: The Return of the Wild Turkey

Publication: National Geographic News   Date: November 21, 2001   View Article

As millions of Americans gather around the table with family and friends on Thursday, wild turkeys may be the ones with the most thanks to give. A century ago, with a population of only 30,000, the large birds were on the road to extinction. Today, they number 5.4 million.

“The recovery of the wild turkey is definitely a success story,” said Bart Semcer, chair of the Sierra Club’s National Wildlife and Endangered Species Committee in Washington, D.C. “They are part of America’s heritage, and the American people came together to recover the species.”

© 2008-2010 Collected Writings By John Roach