Many colorful critters during a walk through the forest on a warm summer day.
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Dornbach, Vienna
A sunny afternoon walk through a posh Vienna neighborhood, with good views.
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Vineyard picnic
An evening walk up through the vineyards around Vienna, with wonderful views of the city & sunset.
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Interesting Insects
Encountered many colorful insects on a sunny hike through the hills and woods.
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Dramatic Skies
Beautiful contrasts and patterns in the clouds during a little hike in the forest.
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Blast from the Past: Blanca Peak
Twenty years ago I hiked up a 14-er in Colorado, carrying a first-gen digital camera…
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Science in Pictures: Ecosystems as Autocatalytic Sets
Theoretical musings about ecosystems and autocatalytic sets playing out in real life, and captured on camera.
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Vienna Full Moon
A beautiful (almost) full moon rise next to the Donau City Tower in Vienna.
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Arborescence
Arborescence is a mathematical term. However, it is also an album by one of my favorite progressive rock bands: Ozric Tentacles.
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Donaukanal
A walk along the Donaukanal (Danube Canal) on a hot & sunny day.
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Family History — Boekestijn
A dive into the family history on my mother’s side, with some interesting insights!
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Sophienalpe
A hike through the hills to see whatever little bit was visible of the solar eclipse.
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Hadersfeld
A hike through the hills and forests north of Vienna. Encountered several snakes along the way!
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Family History — Hordijk
A dive into the family history on my father’s side, with some interesting insights!
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Hermannskogel
A long walk through the hills and vineyards around Vienna on a gorgeous sunny day.
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Vienna City Center
A long morning walk through the Vienna city center. Still discovering new places…
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Donauinsel
A nice walk along the Donauinsel with beautiful light contrasts.
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Science in Pictures: Evolution on Fitness Landscapes
A pictorial explanation by Wandering Wim and Stumbling Stu.
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Yearly Earthquake Update
No, there still is no evidence for a sustained increase in number of earthquakes in the recent past…
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Autocatalytic Sets Turn 50
50 years ago, in 1971, Stuart Kauffman published his initial ideas on autocatalytic sets. A look back…
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Beethoven’s 250th Birthday
250 years ago this month, Ludwig van Beethoven was born in Bonn, but lived in Vienna most of his life. Here is a photographic & historical exploration of his time in Vienna.
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Sunset over the Bodensee
A nice sunset over the Bodensee, as watched from Bregenz.
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My Erdős number is 3
A formal proof that my Erdős number is equal to 3.
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Kahlenberg Sunset
Now that you know why sunsets are red, here are some impressions of a gorgeous one I witnessed recently.
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Why Are Sunsets Red?
What is it that turns everything red during a sunset? Here’s the answer…
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