Stunning pictures of the volcano that blew a hole in the sky as astronauts witness eruption from International Space Station



Framed by a circle of clouds, this is a stunning illustration of Nature's powerful force.
A plume of smoke, ash and steam soars five miles into the sky from an erupting volcano.
The extraordinary image was captured by the crew of the International Space Station 220 miles above a remote Russian...

Tunguska - Thousands of square kilometres of trees were burned



In the early morning of 30 June, 1908, witnesses told of a gigantic explosion and blinding flash. Thousands of square kilometres of trees were burned and flattened.
Scientists have always suspected that an incoming comet or asteroid lay behind the event - but no impact crater was ever discovered and no expedition to the area has ever found any large fragments...

A petabyte is a unit of computer memory or data storage capacity equal to one quadrillion bytes. Here's a series of stats to help you understand just how much data that really is.

Fast Brain Facts
* 3 = the weight of your brain in pounds
* 4 to 6 = the number of minutes your brain can survive without oxygen before it starts to die
* 8 to 10 = the number of seconds you have before losing consciousness due to blood loss
* 10 to 23 = the number of watts of power your grain generates when you’re awake (that’s enough to turn on a light bulb!)
* 20 = the percentages of oxygen and blood flow going to the brain
* 100,000...

There are some things in this world that will never be forgotten, this week’s 40th anniversary of the moon landing for one. But Moore’s Law and our ever-increasing quest for simpler, smaller, faster and better widgets and thingamabobs will always ensure that some of the technology we grew up with will not be passed down the line to the next generation of geeks.

That is, of course, unless we tell them all about the good old days of modems and typewriters, slide rules and encyclopedias...