Home From the Wires Scientists nail down more precise dinosaur extinction date

Scientists nail down more precise dinosaur extinction date

| Print |  Email
Friday, February 08, 2013

BBC: Scientists have determined the most precise date yet for dinosaur extinction, using dating techniques on rock and ash samples. Dinosaurs died 66,038,000 years ago, give or take 11,000 years.

That date appears to coincide with the impact of a comet or asteroid.

Debate has raged as to whether the giant impact was the sole cause of a quick demise of the dinosaurs, whether they were already in decline at the time of the impact, or whether the impact in fact happened as much as 300,000 years after they were gone.

Read more.

 

More Articles

Gone Girl

News
Monday, September 29, 2014
roundup-logo-thumb-14BY LINDA BAKER | OB EDITOR

Wehby disappears, Kitzhaber fails to disclose and Seattle gets bike share before Portland.


Read more...

Fly Zone

November/December 2014
Wednesday, October 22, 2014
BY JOE ROJAS-BURKE

The black soldier fly’s larvae are among the most ravenous and least picky eaters on earth.


Read more...

Two Sides of the Coin

Contributed Blogs
Wednesday, October 22, 2014
22 twosidesBY JASON NORRIS

Historically, when the leaves fall, so do the markets. This year, earnings, Europe, energy and Ebola have in common? Beyond alliteration, they are four factors that the investors are pointing to for this year’s seasonal volatility.


Read more...

College Conundrum

October 2014
Thursday, September 25, 2014
BY KIM MOORE

University and college tuition fees have been rising for more than a decade, while state funds for higher education have steadily declined.


Read more...

The Rail Baron

October 2014
Thursday, September 25, 2014
BY LINDA BAKER

Oil is gushing out of the U.S. and Canada, and much of it is coming from places that don’t have pipeline infrastructure. So it’s being shipped by rail.


Read more...

The Diaspora

October 2014
Thursday, September 25, 2014
BY LEE VAN DER VOO

Former newspaper reporters move into brand journalism.


Read more...

I Know How You Feel

November/December 2014
Wednesday, October 22, 2014
BY JESSICA RIDGWAY

Most smartphones come equipped with speech recognition systems like Siri or Cortana that are capable of understanding the human voice and putting words into actions. But what if smartphones could do more? What if smartphones could register feeling?


Read more...
Oregon Business magazinetitle-sponsored-links-02
SPONSORED LINKS