Free online tool to compare PDF files. Shows differences of two PDFs files quickly. Easy to use. No installation. No registration. -- tool

The 63rd HPS meeting in Cleveland discussed, among other things, how much we are spending trying to adhere to absurdly-low radiation limits fostered upon society by the LNT, trying to save one theoretical life while not saving millions of real lives for the same amount of money. -- health

In his Nobel Prize Lecture of December 12, 1946, Hermann J. Muller argued that the dose–response for radiation-induced germ cell mutations was linear and that there was ‘‘no escape from the conclusion that there is no threshold’’. However, assessment of correspondence between Muller and Curt Stern 1 month prior to his Nobel Prize Lecture reveals that Muller knew the results and implications of a recently completed study at the University of Rochester under the direction of Stern, which directly contradicted his Nobel Prize Lecture. This finding is of historical importance since Muller’s Nobel Lecture gained considerable international attention and is a turning point in the acceptance of the linearity model in risk assessment for germ cell mutations and carcinogens. -- health

Open-source (FREE) RPG (Roleplaying Game) for any genre. Create heroes your system said you couldn't. Exploding dice drive epic stories. Freeform storytelling with strategic fun. -- rpg

I bought and painted this one. The metal is soft enough to let you cut off any parts you don't want with a small pair of snips. Painting is easy and makes a huge difference. -- rpg

Might buy this one day. -- rpg

A copmrehensive review of popular iPad role playing games. -- rpg

Thoughts about D&D -- rpg

Do you need a brain to think? And are plants much smarter than we give them credit for? Radiolab Podcast by Robert Krulwich. -- intelligence

Salamander Tales comic by Claire Gary -- art

Many people are afraid of radiation, but scientists make clear that radiation is not so dangerous. Therefore they argue for a relaxing of the safety limits. (LNT) -- health

CCF Report details 8 provinces that can seize your private property. -- politics

Curated by professional editors, The Conversation offers informed commentary and debate on the issues affecting our world. Plus a Plain English guide to the latest developments and discoveries from the university and research sector. -- politics

The Biodiversity Heritage Library improves research methodology by collaboratively making biodiversity literature openly available to the world as part of a global biodiversity community. -- art

The Ellen MacArthur (sailed around the world) Foundation works to inspire a generation to re-think, re-design and build a positive future circular economy. -- politics

The Cost of Living loves money -- how we make it, spend it, waste it and grow it. Come along with our host Paul Haavardsrud to discover how innocuous everyday decisions connect with the larger economy in ways big, small, good, bad, obvious and unseen. -- media

Why did my PC wake up by itself? What woke up my PC? Use [powercfg -lastwake] to find out. If it was svchost.exe UpdateOrchestrator the it's just windows updates. You can disable this via: Windows Update Settings > "Choose what updates to install". -- windows

The art studio, blog and gallery of Justin Gerard and Annie Stegg Gerard. They produce original paintings, narrative and fantasy illustrations and hand-made art. -- art

Geoffrey Hinton's 2006 Science Paper that triggered the "deep learning" revolution. Suggested by MikeO. If you are serious this is what you should do: a. Learn plenty of linear algebra b. Learn how to program GPUs using CUDA and OpenCL. c. Learn basic theory, like backprop and autoencoders. d. Write some code, read some books, write more code. -- intelligence

MIT 6.034 Artificial Intelligence, Fall 2010, Instructor: Patrick Winston. Suggested by MikeO. -- intelligence