When worlds collide – study says our moon was formed by a collision with planet-sized body

From the European Association of Geochemistry New isotopic evidence supporting moon formation via Earth collision with planet-sized body A new series of measurements of oxygen isotopes provides increasing evidence that the Moon formed from the collision of the Earth with another large, planet-sized astronomical body, around 4.5 billion years ago. This work will be published…

Watch Earth from orbit – LIVE stream

The High Definition Earth Viewing (HDEV) experiment aboard the International Space Station (ISS) was activated April 30, 2014. It is mounted on the External Payload Facility of the European Space Agency’s Columbus module. This experiment includes several commercial HD video cameras aimed at the earth which are enclosed in a pressurized and temperature controlled housing.…

Ridley on the claims of exhausting global resources

In the Wall Street Journal, Matt Ridley has an interesting article about the the claims that we will run out of “X”, except that human ingenuity always seems to grasp this and then “Y” comes along. The World’s Resources Aren’t Running Out Ecologists worry that the world’s resources come in fixed amounts that will run…

An alternate theory for the terrestrial ice-age trigger

[Note: This essay discusses a theory that some people might consider as impossible, and it may very well be, even though there is some support for the idea that continental position plays a role in major ice ages. As seen below, Milankovitch cycles resulting in insolation variance is a leading theory that seems much more…

NASA revises Earth’s Radiation Budget, diminishing some of Trenberth’s claims in the process

From the “settled science” department comes this new revision of Earth’s entire radiation budget. Many WUWT readers can recall seeing this radiation budget graphic from Kenneth Trenberth in 2009: Source: Trenberth et al. 2009 http://echorock.cgd.ucar.edu/cas/Staff/Fasullo/my_pubs/Trenberth2009etalBAMS.pdf That figure in a slightly different form also appeared in the 2007 IPCC AR4 WG1 report with different numbers: 

Climate as a heat engine

Guest essay by Jan Kjetil Andersen As Willis describes in his article on December 21, the atmosphere can be seen as a gigantic heat engine, i.e. a machine which convert thermal energy, namely temperature, into mechanical energy, namely wind. It may seem a bit strange to view the weather system as a kind of machine…