January 30, 2014 |
Migrating birds probably did it. That's what UC Davis epidemiology professor Janet Foley says after DNA detective work confirmed that a disease-carrying tick only found in the southeastern United States has colonized a federally endangered rodent population in an extremely isolated patch of Mojave Desert wetlands. DNA sequencing also shows that the relic population of Amargosa voles near Tecopa, Calif., just east of Death Valley National Park, and the tick that scientists know as Ixodes minor also share Borrelia burgdorferi , the tick-borne bacterium responsible for Lyme disease.
December 2, 2013 |
Machinery was purring gently. Boxes of Samsung televisions were stacked like blocks atop pallets on a glossy concrete floor. A shift supervisor waved jauntily as he zipped by on a red motorized chariot. At 10 a.m. at the Target.com fulfillment center in Ontario, all seemed peaceful - even though it was a record-setting Cyber Monday. And this year, the online world's answer to Black Friday was attracting nearly as many shoppers as the four-day retail frenzy that preceded it. "It never really feels like chaos," general manager Melissa Montgomery said of the annual online shopping event.
November 18, 2013 |
WASHINGTON - The share of Americans moving to a new home fell this year, underscoring the lingering effects of the Great Recession and a drag on the housing market. The main factor was an unexpectedly large drop in the mobility of young adults, who account for the largest moves among age groups and the bulk of starter-home purchases. The Census Bureau reported Monday that the annual domestic migration rate - the share of the nation's population that moved - declined to 11.7% after rising to 12% last year.
November 10, 2013 |
ARUSHA, Tanzania -- Fire was the last thing my husband, Steve, and I expected on our trip to Tanzania for a 12-day safari. Yet here we were in our Land Cruiser, bouncing along rutted dirt roads through walls of fire. Our hosts reassuringly explained that these fires were intentionally set by rangers - a necessary evil to keep the Serengeti's famous grazers nourished and content on land that had been set aside for them. And it worked. In just a few days, the green flash of new grass began to pop through the thin coat of jet-black ashes, enticing the return of wildebeests, zebras, impala and gazelles - and with them, a steady flow of tourism dollars.
October 4, 2013 |
Pope Francis lamented the mass drowning of African boat people off the Italian island of Lampedusa on Thursday as "shameful" evidence of human indifference to those in despair. President Giorgio Napolitano of Italy, where tens of thousands of desperate migrants cast up on remote shores each year, deemed the deadliest migration accident in the Mediterranean Sea this year a "massacre of innocents. " But U.N. officials tasked with protecting those fleeing their homelands put into unemotional perspective the tragic end to a boatload of migrants' dangerous gamble for a better life: an everyday occurrence.
August 31, 2013 |
What in the name of the Oregon Ducks is going on with California, as well as other western states, and its Facebook liking of that university's football team? The social media website researched "likes" on its pages from each state, county by county, discovering that the Ducks have flown the farm in the Willamette Valley to dominate the Pacific Northwest -- outside of Boise State territory in Idaho, of course, -- as well as two-thirds of California, half of Nevada and parts of other western states.