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tsuomela : earth   30

Have you ever wondered how fast you are spinning... | Vizual Statistix
"Have you ever wondered how fast you are spinning around Earth’s rotational axis?  Probably not, but now you can find out anyway!  This graph shows the tangential speed of a point on Earth’s surface for a given latitude due to Earth’s rotational motion – it does not include speed due to our revolution around the sun! Tangential (linear) speed is the magnitude of the velocity vector, which points tangent to Earth’s surface in the same plane as the circle of latitude."
map  visualization  earth 
january 2014 by tsuomela
NASA - Top Five 'Earth as Art' Winners
We asked the public to vote on their favorite images from the more than 120 images in the online "Earth as Art" collection. We received over 14,000 votes and are happy to announce the top five winners:
satellite  images  earth  art 
july 2012 by tsuomela
Earth | Time Lapse View from Space, Fly Over | NASA, ISS on Vimeo
Time lapse sequences of photographs taken by the crew of expeditions
28 & 29 onboard the International Space Station from August to October,
2011, who to my knowledge shot these pictures at an altitude of around 350 km.
video  science  space  earth  time-lapse 
november 2011 by tsuomela
Long-Neglected Experiment Gives New Clues to Origin of Life - ScienceNOW
Reports on reanalysis of 1950s classic Stanley Miller experiments that created amino acids in early Earth gas environments.
life  biology  exobiology  planetary  geology  paleontology  history  earth  earth-science 
march 2011 by tsuomela
The 70 Online Databases that Define Our Planet - Technology Review
So in the interests of stimulating this debate, I'm reproducing here Helbing's list of websites that are potential sources of data for an Earth Simulator. It makes for fascinating, if unnerving, reading:
data  data-collection  earth  simulation 
december 2010 by tsuomela
Encyclopedia of Earth
Welcome to the Encyclopedia of Earth, an electronic reference about the Earth, its natural environments, and their interaction with society. The Encyclopedia is a free, fully searchable collection of articles written by scholars, professionals, educators, and experts who collaborate and review each other's work. The articles are written in non-technical language and are useful to students, educators, scholars, professionals, as well as to the general public.
education  science  environment  reference  encyclopedia  earth  ecology  geography  expertise  reputation 
september 2010 by tsuomela
Official Blog: Seeing the forest through the cloud
In developing this prototype, we've collaborated with Greg Asner of Carnegie Institution for Science, and Carlos Souza of Imazon. Greg and Carlos are both at the cutting edge of forest science and have developed software that creates forest cover and deforestation maps from satellite imagery. Organizations across Latin America use Greg's program, Carnegie Landsat Analysis System (CLASlite), and Carlos' program, Sistema de Alerta de Deforestation (SAD), to analyze forest cover change. However, widespread use of this analysis has been hampered by lack of access to satellite imagery data and computational resources for processing.

What if we could offer scientists and tropical nations access to a high-performance satellite imagery-processing engine running online, in the “Google cloud”? And what if we could gather together all of the earth’s raw satellite imagery data — petabytes of historical, present and future data — and make it easily available on this platform?
environment  google  maps  technology  earth  satellite  remote-sensing  data-processing  gis  geography  deforestation  cloud  collaboration  data  sharing 
march 2010 by tsuomela
The Data Observation Network for Earth (DataONE) is poised to be the foundation of new innovative environmental science through a distributed framework and sustainable cyberinfrastructure that meets the needs of science and society for open, persistent, robust, and secure access to well-described and easily discovered Earth observational data
science  e-science  cyberscience  infrastructure  environment  earth  curation  data  school(UTenn)  research 
march 2010 by tsuomela
Charlie's Diary: How habitable is the Earth?
So, back to the gedankenexperiment. Currently, a random meat probe dropped on the Earth's surface has something like a 15% chance of finding it survivable. But a random sampling over the historical epoch would return a survivability probability of around 1%. And over the future epoch, it's likely similar, unless we're erring massively on the side of pessimism about the prospects for our atmospheric composition remaining stable.

Ergo: to a space probe searching for somewhere that our kind of life can thrive, a truly random sampling of the Earth's surface (distributed over both time and area) would probably result in the conclusion that the planet is uninhabitable.
biology  geology  astrobiology  space  science  thought-experiment  sf  earth  history  paleontology 
october 2009 by tsuomela
A scientist argues that the natural world isn't benevolent and sustaining: it's bent on self-destruction - The Boston Globe
"According to the paleontologist Peter Ward..the earth's history makes clear that, left to run its course, life isn't naturally nourishing - it's poisonous. Rather than a supple system of checks and balances, he argues, the natural world is a doomsday device careening from one cataclysm to another."
environment  ecology  earth  geology  life  biology  history  paleontology  gaia 
february 2009 by tsuomela
Visible Earth: Home
NASA gallery of satellite photos of Earth.
art  earth  space  satellite  photos  nasa 
october 2005 by tsuomela

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