News tagged with oak trees
Of microorganisms and man: First large-scale test confirms Darwin's theory of universal common ancestry
More than 150 years ago, Darwin proposed the theory of universal common ancestry (UCA), linking all forms of life by a shared genetic heritage from single-celled microorganisms to humans. Until now, the theory that makes ...
May 12, 2010 |
4.3 / 5 (65) |
164
|
Geologist investigates canyon carved in just three days in Texas flood
In the summer of 2002, a week of heavy rains in Central Texas caused Canyon Lake -- the reservoir of the Canyon Dam -- to flood over its spillway and down the Guadalupe River Valley in a planned diversion ...
Space & Earth / Earth Sciences
Jun 20, 2010 |
4.9 / 5 (28) |
111
|
Study finds that mild winters are detrimental to butterflies
The recent mild winter throughout much of the United States was a cause for celebration for many. However, butterfly aficionados shouldn't be joining in the celebration.
Apr 20, 2012 |
5 / 5 (3) |
7
|
Calif. utility stumbles on 1.4M years old fossils
(AP) -- A utility company preparing to build a new substation in an arid canyon southeast of Los Angeles has stumbled on a trove of animal fossils dating back 1.4 million years that researchers say will fill in blanks in ...
Other Sciences / Archaeology & Fossils
Sep 21, 2010 |
5 / 5 (4) |
0
Old-growth tree stumps tell the story of fire in the upper Midwest
Researchers have constructed a 226-year history of fire in southern Illinois by looking at fire scars in tree stumps. Their study, the most in-depth fire history reported for the upper Midwest, reveals that ...
Mar 14, 2011 |
5 / 5 (2) |
0
|
Do urban 'heat islands' hint at trees of future?
City streets can be mean, but somewhere near Brooklyn, a tree grows far better than its country cousins, due to chronically elevated city heat levels, says a new study. The study, just published in the journal ...
Apr 24, 2012 |
5 / 5 (1) |
1
Invasive Species on the March: Variable Rates of Spread Set Current Limits to Predictability
(PhysOrg.com) -- Whether for introduced muskrats in Europe or oak trees in the United Kingdom, zebra mussels in United States lakes or agricultural pests around the world, scientists have tried to find new ...
Sep 17, 2009 |
5 / 5 (1) |
0
Out of Africa and Into the American Midwest
Grasses bend in the wind, their golden tips tracing arcs across fields that stretch toward the horizon. Sunwashed by a fading evening light, these reedy ballet dancers are central figures in savanna, an ecosystem ...
Jan 09, 2012 |
3 / 5 (2) |
0
Firewood movement leading cause of oak infestation in San Diego County
A catastrophic infestation of the goldspotted oak borer, which has killed more than 80,000 oak trees in San Diego County in the last decade, might be contained by controlling the movement of oak firewood from that region, ...
Sep 02, 2011 |
5 / 5 (1) |
0
Danger lurks underground for oak seedlings
Scientists trying to understand why oaks are starting to disappear from North American forests may need to look just below the surface to find some answers.
Mar 03, 2009 |
4.5 / 5 (2) |
1
Oak trees have a lot of gall
Those valley oak trees (Quercus lobata) in California's Central Valley have a lot of gall.
Mar 31, 2011 |
not rated yet |
0
Radioactive boars on the rise in Germany
(AP) -- It was a big shot. A big hog. And a big disappointment.
Aug 20, 2010 |
4.8 / 5 (6) |
0
Achoo! Pollen at its worst in years in many areas
(AP) -- Pollen: It's on your car, in the air and especially in your sinuses.
Apr 09, 2010 |
1.5 / 5 (2) |
0
Ravenous foreign pests threaten national treasures
Foreign pests are eating their way through our national forests, destroying majestic scenery and costing taxpayers millions of dollars.
Dec 06, 2010 |
not rated yet |
0
New Southern California beetle killing oaks
U.S. Forest Service scientists have completed a study on a beetle that was first detected in California in 2004, but has now attacked 67 percent of the oak trees in an area 30 miles east of San Diego.
May 01, 2009 |
4 / 5 (1) |
0
