July 12, 2012 |
Supporting a controversial view of how humans might have populated the Western Hemisphere, geneticists have found that groups from Asia traveled over the Bering Strait into North America in at least three separate migrations beginning more than 15,000 years ago - not in a single wave, as has been widely thought. "We have various lines of evidence that there was more than one migration," said Dr. Andres Ruiz-Linares, a professor of human genetics at University College London and senior author of a report on the findings that was published Wednesday by the journal Nature.
July 12, 1994
Across the globe, millions of people are on the move. Today, about 100 million live outside their countries of birth. Their motives are many, but the most popular one is economic opportunity. Refugees fleeing war or persecution doubled in number in the turbulent 1980s, but they still represent only a minority of all migrants. These are some of the discoveries in a new report, "Global Migration: People on the Move," by Population Action International in Washington, D.C.
December 3, 1987 |
Millions of monarch butterflies have arrived in Michoacan state after their yearly 3,600-mile journey from the Great Lakes, officials said.
CALIFORNIA | LOCAL
October 21, 2012 |
CUATRO MILPAS, MEXICO - In this hardscrabble farming village, an American teenager like Luis Martinez was bound to stand out. Raised on Little Caesars pizzas and Big Gulps, Luis, 13, was portly. The village kids, subsisting on bowls of chicken broth, were all bones and elbows. Luis wore Air Jordan high-tops. The kids wore sandals made of rubber tires. PHOTOS: Teenager's identity lies on both sides of the border He shot at birds with his BB gun and pedaled around on a Mongoose bike.
January 16, 2010 |
Every year, shorebirds flap thousands and thousands of miles to the Northern Hemisphere, then back to the south. It's an exhausting round trip. Yet some sandpipers and plovers head deeper into the Arctic, tacking as many as 2,000 miles onto their journey. Why they do it has long puzzled biologists. "Why wouldn't they go in the low Arctic instead of the high Arctic? Why would you go so far north? It just increases the risk of getting lost or getting cold," said Allan Baker, senior curator of ornithology and head of the Department of Natural History at the Royal Ontario Museum in Toronto.
September 24, 1991
The Vatican adds a paternal voice to growing concern about international migration with a six-day conference opening Monday entitled "Solidarity in Favor of New Migrations." European Community President Jacques Delors will be the keynote speaker at a conference offering testimony to the emergence of migration as a hot global issue. Other speakers on the Vatican agenda include Sadako Ogata, U.N.