Last week you had a chance to ask co-founder and CEO of Intellectual Ventures, Nathan Myhrvold, questions before his live Q&A. Below you'll find his answers to a few of the highest rated. Make sure you come back today from 12-12:30pm PDT (3-3:30pm ET, 19:00-19:30 GMT) to ask him whatever you like in real time. We'll have a new story for your questions at that time.

dstates writes with news from NASA about the state of available water in the Middle East. From the NASA article: "'GRACE data show an alarming rate of decrease in total water storage in the Tigris and Euphrates river basins, which currently have the second fastest rate of groundwater storage loss on Earth, after India,' said Jay Famiglietti, principal investigator of the study and a hydrologist and professor at UC Irvine. 'The rate was especially striking after the 2007 drought. Meanwhile, demand for freshwater continues to rise, and the region does not coordinate its water management because of different interpretations of international laws.'" dstates adds: "Water is a huge global security issue. To understand the middle east, you need to understand that the Golan Heights provides a significant amount of the water used in Israel. Focusing on conflicts and politics means that huge volumes of valuable water are being wasted in the Middle East, and this will only exacerbate future conflicts. Water is a serious issue between India and China. And then there is Africa. U.S. food exports are in effect exporting irrigation water drawn from the Ogallala aquifer. Fracking trades water for energy, and lack of water limits fracking in many parts of th world. Think about it."

Michael J. Ross writes "Most computer and web programming books are written entirely by a single author, while the remaining are written by more authors, typically with each one tackling several chapters. The latter approach can suffer from redundant material undetected by editors, and inconsistency in the writing style from one chapter to the next. Yet it offers the significant advantage that the subject matter of each chapter can be presented by an authority on that topic — who can focus on making that explication the best possible, without the burden of completing an entire book. That was one of my first thoughts (and hopes) when hefting the 1112 pages and 4.1 pounds of the Definitive Guide to Drupal 7." Read on for the rest of Michael's review.

tetrahedrassface writes "An Iowanian is living on nothing but beer for the 46 days of Lent. J.Wilson, a blogger, and editor of the weekly Adams County Free Press modeled this Lent exercise on 17'th century German Monks who practiced liquid fasts. Using a custom made grog that has high caloric values is key as Wilson says because ordinary light beer just doesn't have enough nutritional value. He has already lost 11 pounds while following his weekday four a day and weekend 5 a day beer scheme."

cremeglace writes "Scientists say they may have discovered a way to develop cool new vaccines — and they mean that literally. By replacing essential genes in a mammalian pathogen with their counterparts from Arctic bacteria, they have created strains that provoke a protective immune response in mice, but that don't spread to the warm parts of the body where they could do serious harm. The team hopes that the method will lead to a new generation of vaccines for major bacterial diseases such as tuberculosis."

Th'Inquisitor was one of several readers to point out coverage of Apple's stealth security fix, included along with the recent Snow Leopard 10.6.4 update. Graham Cluley of Sophos first noticed the update to protect Mac computers from a Trojan, and the fact that Apple didn't mention it in the release notes. The malware opens a back door to a Mac that can allow attackers to gain control of the machine and snoop about on it or turn it into a zombie. "You have to wonder," writes Cluley, "whether their keeping quiet about an anti-malware security update like this was for marketing reasons." While he certainly has a point that Apple benefits by its users' belief that the platform is secure, you also have to wonder whether any such publicity from a security company has a marketing subtext, as well.

Th'Inquisitor writes "Pornography makes up 37% of the total number of web pages online, according to a new study published by Optenet, a SaaS provider. According to the report, which looked at a representative sample of around four million extracted URLs, adult content on the Internet increased by 17% in the first quarter of 2010, as compared to the same period in 2009."

An anonymous reader writes "The ongoing poitical turmoil in Thailand has inspired the country's Ministry of Information, Computers, and Telecommunications to issue a stern warning that all users of the Internet in Thailand must 'use the internet in the right way or with appropriate purpose and avoid disseminating information that could create misunderstanding or instigate violent actions among the public', that 'all popular websites and social networks such as facebook, twitter, hi5 and my space [sic] will be under thorough watch,' and that 'Violators will be prosecuted by law with no compromise.' Thailand has draconian anti-lèse majesté laws which are routinely abused in order to settle political scores and silence dissent, and recently implemented a so-called 'Computer Crimes Act' which appears to be almost solely focused on thoughtcrimes and censorship, rather than dealing with, you know, actual crime. Several Web forums have recently been shut down, their operators charged because they failed to delete 'harmful posts' quickly enough to suit the Thai authorities."

JoshuaInNippon writes "In honor of Pi Day, March 14 (or 3.14 for those who may need a hint), readers may be interested in reading an interview with Professor Daisuke Takahashi, the Japanese researcher who found 2.5 trillion digits of Pi back in August, before being apparently being edged out in December by a French computer programmer looking to prove his efficient coding abilities. Professor Takahashi's interview gives some unique insight into one man who truly marvels at the number that has driven people to ever greater lengths to find more digits for centuries." Plant Kingdom adds "There have been a number of proposals for alternatives to March 14 (see the Wikipedia page for Pi Day). Here's mine: when the Earth has gone through 1/pi-th of its orbit, as measured from Winter Solstice to Winter Solstice. I've put together a web site to make the case."

Many readers are submitting stories related to Google Chrome OS. ruphus13 points out a GigaOm opinion piece about how, if users end up rejecting its current cloud-only focus, the nascent OS may succeed as a netbook secondary operating system alongside Windows (in company with secondaries based on other Linux flavors, including Android). Engadget reviews a Chrome OS on a USB key setup that is claimed to offer eye-opening performance compared to running under virtualization. And an anonymous reader notes the 0.1 beta release of ChromeShell, which installs a "Chrome OS-like" environment that boots to the Chrome browser in ~3 seconds; users can switch to Windows later as desired.

An anonymous reader writes "There's a writeup on SpywareGuide that explores the world of Xbox Gamerscore hacking, and how high Gamerscores are proving to be a big target for hackers and phishers. It also talks about how a recent release of a Gamerscore-altering program onto forums for hacking & cheating is proving to be lucrative business for both eBay sellers and those who want to artificially inflate a Gamerscore before selling that account, or trading it for credit card details."

JohnSmedley sent in a story about what might be the last SciFi film worth caring about this summer. He writes "Wired has an interesting piece up on the upcoming District 9 release. District 9 rose from the ashes of a failed Halo movie and expands on 'Alive in Jo'Burg' which is a South African short film by Blomkamp. Both the short and full feature films expand and explore a premise in which aliens in space are treated as badly as illegal immigrants and the underclass. The story begins as a damaged alien craft lands in Africa. The foreign race is quarantined in a remote area called District 9, and from there are subjected to xenophobia, and the desire of a multi-national conglomerate to steal their technology. The film is an exploration of what would happen in terms of segregation between an alien race and humans, subjecting the stranded visitors to the very human condition of greed, fear, and exploitation. District 9 will be in theatres on August 14'th, and you can view the trailers from the viewpoint of Multi-National United."

wdavies writes "According to this New York Times article, Google is funding a controversial deep drill geothermal project north of San Francisco. Apparently the company, AltaRock, omitted to disclose that the same deep drilling caused a major quake in Basel, Switzerland when it was last used. Given the notorious geological instability of the Northern Californian coast, this strikes me as kind of dumb — and given the known likelihood of this technique producing earthquakes, somewhat EVIL."

heychris writes "Eucalyptus, an ebook app for iPhone, has been rejected from the App Store for 'objectionable content.' What's so objectionable? The Kama Sutra, available from Project Gutenberg, which is available on other ebook readers as well. Not only that, but the screenshot shows that you would have to search for Kama Sutra to get it; it's not built in to Eucalyptus. The author is reasonable but frustrated, while Herr Gruber is more succinct." I wonder how good the now-cheap Nokia 810 is as an e-book reader.

TaeKwonDood writes "You might think throwing out the occasional titillating article title is part of some grand media strategy. Discover is famous for whoring themselves out for page views with articles like Bizarre Aquatic Creatures Are Secretly Lesbian Necrophiliacs and Scientific American gets into the act with Rough Sex at 40,000 Leagues Under the Sea, which got them additionally ridiculed because that is about 30X greater than the radius of the Earth, but there are occasionally real articles that aren't all tramped up and just happen to deal with sex; some of it even kinky. All of it involving cortisol. The difficulty? Kinky people are okay with being monitored and they don't always realize what 'control' means in a scientific context, but they sure don't like to stick within the study parameters."

An anonymous reader writes "Bruce Schneier and company have created a new hash function called Skein. From his blog entry: 'NIST is holding a competition to replace the SHA family of hash functions, which have been increasingly under attack. (I wrote about an early NIST hash workshop here.) Skein is our submission (myself and seven others: Niels Ferguson, Stefan Lucks, Doug Whiting, Mihir Bellare, Tadayoshi Kohno, Jon Callas, and Jesse Walker). Here's the paper."

theodp writes "Al Gore, Bill Joy, and a Norwegian cutie — a TH!NK open electric car — grace the cover of the latest NYT Magazine, which asks: Can the venture capitalists at Kleiner Perkins reduce our dependence on oil, help stop global warming, and make a lot of money at the same time? While Kleiner Perkins — which funded Genentech, Netscape, Google and others — has a number of other green-tech bets, a partner says its goal is 'to make a lot of money for our investors,' not to save the environment."

blackbearnh writes "O'Reilly Media is running an interview with Gordon Mohr, Chief Technologist for the Internet Archive (archive.org). If you've ever wondered how pages are selected for archiving, or just how they manage such a huge quantity of data, the answers are here. The interview also touches on the problems of intellectual property in archives, archiving the Internet in a post Web 2.0 world, and the potential vulnerabilities exposed by archiving web sites that may include security exploits."

RonMcMahon writes "Lawyers for the city of New York have subpoenaed the text message records of thousands of people involved in demonstrations at the 2004 Republican National Convention. Tad Hirsch, creator of the TXTmob code that enabled convention demonstrators to transmit messages to thousands of telephones, has been instructed to release the content of messages exchanged on the service and to identify people who sent and received messages. Hirsch argues that release of such information would be a violation of users' First Amendment and privacy rights. 'I think I have a moral responsibility to the people who use my service to protect their privacy,' said Hirsch."

sdedeo writes "Less known than he deserves to be among American science fiction readers is Iain M. Banks. In his native United Kingdom, Banks' work is released in hardcover at the front of bookshops; here, those seeking his science fiction work, at least, must dig down into the trade paperbacks — and often find things out of print. Those who do discover him in the States are usually pleasantly surprised to find the writing far more clever and engagingly written than the low-budget production values imply. With Orbit's release of his latest work, Matter, as well as its planned re-release of some of his earlier classics, things look to change." Read below for the rest of Simon's review.