Here is a question about this article: There are a number of proposals to redefine certain of the SI base units in terms of fundamental physical constants. This has already been done for the metre, which is defined in terms of a fixed value of the speed of light. The most urgent unit on the list for redefinition is the kilogram, whose value has been fixed for all science (since 1889) by the mass of a small cylinder of platinumiridium alloy kept in a vault just outside Paris. While nobody knows if the mass of the International Prototype Kilogram has changed since 1889 the value 1 kg of its mass expressed in kilograms is by definition unchanged and therein lies one of the problems it is known that over such a timescale the many similar PtIr alloy cylinders kept in national laboratories around the world, have changed their relative mass by several tens of parts per million, however carefully they are stored, and the more so the more they have been taken out and used as mass standards. A change of several tens of micrograms in one kilogram is equivalent to the current uncertainty in the value of the Planck constant in SI units.
What is the answer to this question: What measurement is deemed most important to redefine in terms of physical constants?
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So... the kilogram

Here is a question about this article: Critical and commercial reception to PS3 improved over time, after a series of price revisions, Blu-ray's victory over HD DVD, and the release of several well received titles. Ars Technica's original launch review gave PS3 only a 6/10, but second review of the console in June 2008 rated it a 9/10. In September 2009, IGN named PlayStation 3 the 15th best gaming console of all time, behind both of its competitors: Wii (10th) and Xbox 360 (6th). However, PS3 has won IGN's "Console Showdown"based on which console offers the best selection of games released during each yearin three of the four years since it began (2008, 2009 and 2011, with Xbox winning in 2010). IGN judged PlayStation 3 to have the best game line-up of 2008, based on their review scores in comparison to those of Wii and Xbox 360. In a comparison piece by PC mag's Will Greenwald in June 2012, PS3 was selected as an overall better console compared to Xbox 360. Pocket-lint said of the console "The PS3 has always been a brilliant games console," and that "For now, this is just about the best media device for the money."
What is the answer to this question: What rating did Ars Technica initially give PlayStation 3?
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So... 6/10

Here is a question about this article: On 15 September the Luftwaffe made two large daylight attacks on London along the Thames Estuary, targeting the docks and rail communications in the city. Its hope was to destroy its targets and draw the RAF into defending them, allowing the Luftwaffe to destroy their fighters in large numbers, thereby achieving an air superiority. Large air battles broke out, lasting for most of the day. The first attack merely damaged the rail network for three days, and the second attack failed altogether. The air battle was later commemorated by Battle of Britain Day. The Luftwaffe lost 18 percent of the bombers sent on the operations that day, and failed to gain air superiority.
What is the answer to this question: The Luftwaffe lost what percentage of its bombers sent that day?
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So...
18