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Die Top Beiträge aus den letzten 50 Beiträgen

Die meisten Kommentare: 6

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2015-02-13 04:00:48 (6 comments, 9 reshares, 11 +1s)Open 


I couldn't quite say it out loud when I wrote this post, but here's a really scary study.

Die meisten Reshares: 9

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2015-02-13 04:00:48 (6 comments, 9 reshares, 11 +1s)Open 


I couldn't quite say it out loud when I wrote this post, but here's a really scary study.

Die meisten +1: 11

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2015-02-13 04:00:48 (6 comments, 9 reshares, 11 +1s)Open 


I couldn't quite say it out loud when I wrote this post, but here's a really scary study.

Die Letzten 50 Beiträge

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2015-08-24 15:02:31 (0 comments, 0 reshares, 3 +1s)Open 

As promised, here’s a look at Sugarloaf (a/k/a 1175) Hill. But first two announcements: The 46L bus line goes from the Coliseum BART station past the zoo to Oakland’s remote Grass Valley neighborhood. It’s the only public transit providing access to the…

As promised, here’s a look at Sugarloaf (a/k/a 1175) Hill. But first two announcements: The 46L bus line goes from the Coliseum BART station past the zoo to Oakland’s remote Grass Valley neighborhood. It’s the only public transit providing access to the…___

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2015-08-17 15:03:38 (0 comments, 0 reshares, 5 +1s)Open 

When I was writing for About.com, I started a photo gallery of peaks. My philosophy was that there are lots of mountains besides the famous ones, like Mount Diablo, that are local heroes. Even a minor eminence can be the center of a neighborhood, and a…

When I was writing for About.com, I started a photo gallery of peaks. My philosophy was that there are lots of mountains besides the famous ones, like Mount Diablo, that are local heroes. Even a minor eminence can be the center of a neighborhood, and a…___

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2015-08-10 15:03:31 (0 comments, 0 reshares, 3 +1s)Open 

I’ve been poking around Oakland’s edges lately. In southernmost East Oakland there’s not a lot of geologic history, but there are some big old trees, survivors of optimistic times, plus nice views of the hills and sky. This is one of our largest and…

I’ve been poking around Oakland’s edges lately. In southernmost East Oakland there’s not a lot of geologic history, but there are some big old trees, survivors of optimistic times, plus nice views of the hills and sky. This is one of our largest and…___

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2015-08-06 21:00:01 (2 comments, 0 reshares, 5 +1s)Open 

What I learned during my guided tour of The Geysers (and afterward).

What I learned during my guided tour of The Geysers (and afterward).___

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2015-08-03 15:04:47 (1 comments, 0 reshares, 4 +1s)Open 

My latest outing took me to what I’ll call the middle part of Skyline Boulevard, the part where the road is divided. Starting at Skyline High School and going south for about 2 miles, a footpath runs in the median. It’s a hidden gem. This is the nearest…

My latest outing took me to what I’ll call the middle part of Skyline Boulevard, the part where the road is divided. Starting at Skyline High School and going south for about 2 miles, a footpath runs in the median. It’s a hidden gem. This is the nearest…___

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2015-07-31 00:18:42 (0 comments, 1 reshares, 4 +1s)Open 

It gives me the willies to think of doing this research, but a thrill to read about it. My weekly post for KQED Science.

It gives me the willies to think of doing this research, but a thrill to read about it. My weekly post for KQED Science.___

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2015-07-27 15:08:37 (0 comments, 0 reshares, 1 +1s)Open 

The neighbors of Knowland Park have something special in their midst: a large stretch of relatively untouched land of the Oakland Hills. If you’ve never been up there, it’s easy to dismiss it. It’s exclusive. You need a car, and there aren’t amy big…

The neighbors of Knowland Park have something special in their midst: a large stretch of relatively untouched land of the Oakland Hills. If you’ve never been up there, it’s easy to dismiss it. It’s exclusive. You need a car, and there aren’t amy big…___

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2015-07-20 15:03:24 (2 comments, 0 reshares, 2 +1s)Open 

The Caballo Hills is the neigborhood flanking Merritt College on the Bay side; it consists of Campus Drive and the Ridgemont development. It’s geologically monotonous, underlain entirely by Leona “rhyolite.” And while all the roads have sidewalks, it’s a…

The Caballo Hills is the neigborhood flanking Merritt College on the Bay side; it consists of Campus Drive and the Ridgemont development. It’s geologically monotonous, underlain entirely by Leona “rhyolite.” And while all the roads have sidewalks, it’s a…___

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2015-07-16 16:43:40 (0 comments, 0 reshares, 2 +1s)Open 

Come on up, the rocks are fine!

Come on up, the rocks are fine!___

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2015-07-13 03:33:53 (0 comments, 1 reshares, 3 +1s)Open 

Up on Redwood Road, across from the entrance to Campus Drive, there’s a pile of boulders of Leona “rhyolite,” probably from the old quarry now occupied by Merritt College, sitting under the trees. While waiting for the 54 bus one day, they waved me over…

Up on Redwood Road, across from the entrance to Campus Drive, there’s a pile of boulders of Leona “rhyolite,” probably from the old quarry now occupied by Merritt College, sitting under the trees. While waiting for the 54 bus one day, they waved me over…___

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2015-07-06 15:07:59 (0 comments, 0 reshares, 4 +1s)Open 

Walking the hills around Skyline High School makes for a nice workout, and there are some rocks, including serpentinite, the Joaquin Miller Formation and the Oakland Conglomerate. Here’s the Google Maps topography with the photo locations. And the…

Walking the hills around Skyline High School makes for a nice workout, and there are some rocks, including serpentinite, the Joaquin Miller Formation and the Oakland Conglomerate. Here’s the Google Maps topography with the photo locations. And the…___

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2015-07-03 18:51:40 (5 comments, 1 reshares, 5 +1s)Open 

Putting better numbers on this familiar phenomenon. By me for KQED Science.

Putting better numbers on this familiar phenomenon. By me for KQED Science.___

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2015-07-02 00:41:10 (4 comments, 0 reshares, 4 +1s)Open 

Yeah, send over a truckload.

Yeah, send over a truckload.___

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2015-06-29 15:02:29 (0 comments, 0 reshares, 6 +1s)Open 

Yesterday I led a walk for the group Wild Oakland that took in the rocks of lower Shepherd Canyon, which are the westernmost outcrops of the Great Valley Sequence. These are the same kinds of rocks that make up the monumental set of ranges marching up the…

Yesterday I led a walk for the group Wild Oakland that took in the rocks of lower Shepherd Canyon, which are the westernmost outcrops of the Great Valley Sequence. These are the same kinds of rocks that make up the monumental set of ranges marching up the…___

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2015-06-26 02:13:32 (0 comments, 1 reshares, 6 +1s)Open 

This week for KQED Science, I write about news that Venus is officially alive.

This week for KQED Science, I write about news that Venus is officially alive.___

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2015-06-22 15:02:35 (0 comments, 0 reshares, 6 +1s)Open 

It may seem like I have a fixation on blueschist. I’ll admit that. I have a fixation on every rock type. Here’s a fine blueschist boulder at the very north end of Castle Drive, in the Piedmont Pines neighborhood. This qualifies as a knocker, and it also…

It may seem like I have a fixation on blueschist. I’ll admit that. I have a fixation on every rock type. Here’s a fine blueschist boulder at the very north end of Castle Drive, in the Piedmont Pines neighborhood. This qualifies as a knocker, and it also…___

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2015-06-15 15:03:45 (0 comments, 0 reshares, 2 +1s)Open 

Cemeteries occupy some of Oakland’s nicest hillsides. Evergreen Cemetery, unlike the others, has a whole hill to itself. The hill consists entirely of sand, silt and gravel laid down in a large alluvial fan (the Fan) back some time in the Pleistocene.…

Cemeteries occupy some of Oakland’s nicest hillsides. Evergreen Cemetery, unlike the others, has a whole hill to itself. The hill consists entirely of sand, silt and gravel laid down in a large alluvial fan (the Fan) back some time in the Pleistocene.…___

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2015-06-11 17:54:44 (0 comments, 0 reshares, 2 +1s)Open 

Forensic seismology has a long history, from the Cold War to now.

Forensic seismology has a long history, from the Cold War to now.___

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2015-06-08 15:05:33 (3 comments, 1 reshares, 4 +1s)Open 

Let’s take a minute to think a bit about public policy. Think about when Oakland’s next major earthquake strikes. Remember, the Hayward fault is considered capable of causing an earthquake of magnitude 7.5 or even larger. According to a compelling memo by…

Let’s take a minute to think a bit about public policy. Think about when Oakland’s next major earthquake strikes. Remember, the Hayward fault is considered capable of causing an earthquake of magnitude 7.5 or even larger. According to a compelling memo by…___

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2015-06-01 15:05:29 (0 comments, 0 reshares, 5 +1s)Open 

My quest to get my arms around Oakland’s serpentinite patch took me to the grounds of Merritt College, where a long tentacle of this rock is mapped. It’s a complicated area, and the topography on the ground no longer matches what’s shown in the geologic…

My quest to get my arms around Oakland’s serpentinite patch took me to the grounds of Merritt College, where a long tentacle of this rock is mapped. It’s a complicated area, and the topography on the ground no longer matches what’s shown in the geologic…___

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2015-05-29 02:54:10 (0 comments, 0 reshares, 1 +1s)Open 

A geeky progress report in modeling one of the Bay area's nastiest seismic events.

A geeky progress report in modeling one of the Bay area's nastiest seismic events.___

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2015-05-25 15:05:14 (0 comments, 0 reshares, 4 +1s)Open 

I’ve done some more poking around in the fat part of the serpentinite patch. Today I’ll show photos from three localities, as marked below on the geologic map (where “sp” means serpentinite). The first locality is a truly spectacular exposure at the…

I’ve done some more poking around in the fat part of the serpentinite patch. Today I’ll show photos from three localities, as marked below on the geologic map (where “sp” means serpentinite). The first locality is a truly spectacular exposure at the…___

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2015-05-22 23:48:56 (0 comments, 2 reshares, 9 +1s)Open 

This happened 100 years ago to the day and hour.

This happened 100 years ago to the day and hour.___

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2015-05-14 17:46:34 (0 comments, 1 reshares, 2 +1s)Open 


Unsurfable "internal waves" a thousand feet high studied by a flotilla of scientists in Luzon Strait, the deep-sea version of Mavericks.


Unsurfable "internal waves" a thousand feet high studied by a flotilla of scientists in Luzon Strait, the deep-sea version of Mavericks.___

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2015-05-02 00:27:25 (0 comments, 0 reshares, 5 +1s)Open 


Visiting the Maldives? You'll be walking on fish turds.


Visiting the Maldives? You'll be walking on fish turds.___

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2015-04-16 20:53:46 (1 comments, 0 reshares, 10 +1s)Open 


This week on KQED Science, I talk about how paleontologists have established that the Capitanian mass extinction was global and should be added to the "Big Five."


This week on KQED Science, I talk about how paleontologists have established that the Capitanian mass extinction was global and should be added to the "Big Five."___

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2015-04-09 18:05:11 (0 comments, 0 reshares, 3 +1s)Open 

I speculate for KQED Science: a repeat of this catastrophe would hurt just as bad, and we'd see it coming better, perhaps for an extra degree of horror.

I speculate for KQED Science: a repeat of this catastrophe would hurt just as bad, and we'd see it coming better, perhaps for an extra degree of horror.___

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2015-03-26 18:22:32 (0 comments, 3 reshares, 7 +1s)Open 


Me weekly post for KQED Science: Keep a weather eye on the sea and it might save your life.


Me weekly post for KQED Science: Keep a weather eye on the sea and it might save your life.___

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2015-03-22 19:00:59 (4 comments, 0 reshares, 8 +1s)Open 

Spring at the old Hotel Mine quarry, East Oakland

Spring at the old Hotel Mine quarry, East Oakland___

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2015-03-14 17:26:45 (0 comments, 0 reshares, 5 +1s)Open 

Homes on 75th Avenue, East Oakland

Homes on 75th Avenue, East Oakland___

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2015-03-05 19:58:53 (0 comments, 0 reshares, 2 +1s)Open 

I am pretty sure that the hillside in this photo is NOT a landside, but two others in this post definitely are.

I am pretty sure that the hillside in this photo is NOT a landside, but two others in this post definitely are.___

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2015-02-28 19:10:49 (0 comments, 0 reshares, 4 +1s)Open 

Art-filled yard with cat, Hillmont Avenue, East Oakland

Art-filled yard with cat, Hillmont Avenue, East Oakland___

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2015-02-19 21:58:38 (1 comments, 3 reshares, 6 +1s)Open 


My weekly KQED Science post: Let's open up our data and harness it to control induced earthquakes, says a key USGS panel.


My weekly KQED Science post: Let's open up our data and harness it to control induced earthquakes, says a key USGS panel.___

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2015-02-13 04:00:48 (6 comments, 9 reshares, 11 +1s)Open 


I couldn't quite say it out loud when I wrote this post, but here's a really scary study.


I couldn't quite say it out loud when I wrote this post, but here's a really scary study.___

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2015-02-07 21:33:25 (0 comments, 0 reshares, 4 +1s)Open 

Chimes Creek is a microcosm of what humans have done to Oakland's oaky lands.

Chimes Creek is a microcosm of what humans have done to Oakland's oaky lands.___

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2015-02-06 19:56:32 (0 comments, 0 reshares, 2 +1s)Open 

For many purposes, listening to the Earth works as well as banging on it.

For many purposes, listening to the Earth works as well as banging on it.___

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2015-01-31 22:42:58 (0 comments, 0 reshares, 3 +1s)Open 

Some of our best rocks aren't in the ground.

Some of our best rocks aren't in the ground.___

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2015-01-29 23:30:43 (0 comments, 0 reshares, 4 +1s)Open 

First of three creeks on the Mills College grounds to get its portrait.

First of three creeks on the Mills College grounds to get its portrait.___

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2015-01-29 22:23:47 (0 comments, 0 reshares, 2 +1s)Open 


It's a small, small WORLD.


It's a small, small WORLD.___

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2015-01-22 22:28:14 (1 comments, 1 reshares, 5 +1s)Open 


It felt nice to actually originate a story; so often I just explain a new journal article, which is important but not all there is.


It felt nice to actually originate a story; so often I just explain a new journal article, which is important but not all there is.___

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2015-01-20 19:15:07 (0 comments, 0 reshares, 3 +1s)Open 

We've had some memorable sunsets lately.

We've had some memorable sunsets lately.___

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2015-01-15 21:39:59 (1 comments, 3 reshares, 6 +1s)Open 


Kalman filtering, the latest statistical tool in Earth science, is applied to the tide-gauge record for a more accurate picture of rising sea level. My latest post for KQED Science.


Kalman filtering, the latest statistical tool in Earth science, is applied to the tide-gauge record for a more accurate picture of rising sea level. My latest post for KQED Science.___

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2015-01-14 23:38:38 (1 comments, 1 reshares, 7 +1s)Open 

Sure enough, there's a real nice outcrop of classic high-grade blueschist right here in Oakland

Sure enough, there's a real nice outcrop of classic high-grade blueschist right here in Oakland___

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2015-01-08 22:19:55 (0 comments, 0 reshares, 2 +1s)Open 


Beryllium-10 research offers a nifty way to learn the state of the natural landscape during the millennia before modern civilization arrived. With that knowledge, we can steer our way back to that state.


Beryllium-10 research offers a nifty way to learn the state of the natural landscape during the millennia before modern civilization arrived. With that knowledge, we can steer our way back to that state.___

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2015-01-03 00:04:01 (0 comments, 0 reshares, 7 +1s)Open 

On the best avenue in Oakland (Maxwell Park nabe).

On the best avenue in Oakland (Maxwell Park nabe).___

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2014-12-31 05:26:53 (1 comments, 0 reshares, 8 +1s)Open 

First of several posts treating the geology of the attractive Mills College campus.

First of several posts treating the geology of the attractive Mills College campus.___

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2014-12-24 05:41:09 (2 comments, 0 reshares, 5 +1s)Open 

A humble highlight of our sublime lake.

A humble highlight of our sublime lake.___

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2014-12-18 18:25:02 (3 comments, 0 reshares, 1 +1s)Open 


The hardest part of writing this piece was finding a good photo of the Western Ghats - apparently if they aren't hidden in monsoon clouds they're shrouded in haze.


The hardest part of writing this piece was finding a good photo of the Western Ghats - apparently if they aren't hidden in monsoon clouds they're shrouded in haze.___

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2014-12-12 00:51:00 (1 comments, 1 reshares, 1 +1s)Open 

Most of what L.A. is proposing will also be adopted in Northern California. Study up on the coming future, when our cities will be resilient enough to ride out earthquakes instead of helplessly suffering, then forgetting them. I wrote this piece to bring it to NoCal's attention.

L.A.’s “Resilience By Design” Report Lays Out Ambitious Earthquake Infrastructure Plan

The just-released seismic resiliency plan for Los Angeles goes beyond just saving lives; it hopes to ensure that the nation's second-largest city will still work after a magnitude 7.8 earthquake. Learn more from +Andrew Alden at KQED Science.___Most of what L.A. is proposing will also be adopted in Northern California. Study up on the coming future, when our cities will be resilient enough to ride out earthquakes instead of helplessly suffering, then forgetting them. I wrote this piece to bring it to NoCal's attention.

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2014-12-04 22:45:02 (0 comments, 1 reshares, 8 +1s)Open 


I got to namecheck the late Frank Zappa, Don Anderson and Percy Bridgman in this post today


I got to namecheck the late Frank Zappa, Don Anderson and Percy Bridgman in this post today___

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