Papers A Key to Life on Other Planets? (Time.com) "What a team of scientists actually found, as described in a paper in Science, is what may be the oddest bacteria on Earth. These microbes live in hellish conditions in Mono Lake, a super-salty, alkaline, arsenic-rich body of water in eastern California that would be toxic to most organisms. But the new bug doesn't just thrive here: it uses arsenic in place of the standard phosphorus as a building block for its internal proteins and even its DNA — and nothing like that has ever been seen before." "It's never been shown that other kinds of life are impossible, though. For decades, for example, biologists have wondered if silicon could take the place of carbon, the basis of all life on Earth, in forming self-reproducing, information-carrying molecules like DNA." 12-10 Correct Star, Wrong Planet (MSNBC News) "Scientists earlier this year announced they had found a small, rocky planet located just far enough from its star to sustain liquid water on its surface, and thus possibly support life." "Turns out the scientists might have picked the right star for hosting a habitable world, but got the planet wrong. The world known as Gliese 581c is probably too hot to support liquid water or life, new computer models suggest, but conditions on its neighbor, Gliese 581d, might be just right." 06-07 Hawking Is Wrong: Finding Extraterrestrial Life Is Not Dangerous (Discovery.com) "I’ve mulled over these warnings and have converged on what I think are some simple truths, from a purely astronomical perspective. The bottom line is that I'm not losing any sleep worrying about awaking one morning to see an alien mothership hovering over Washington D.C." 05-10 Hawking: Finding Extraterrestrial Life May Be Dangerous (CBS News) "If E.T. phones, hang up." "That's the implication from British astrophysicist Stephen Hawking, who said that while extraterrestrial life almost certainly exists, it could be dangerous for humans to interact with them." 04-10 Kids' Science Challenge (SETI.org) "The SETI Institute's Education and Public Outreach (EPO) programs share the excitement of searching for life in the universe with people of all ages. Many folk are curious about our place in the universe: are we alone in the vast ocean of stars and galaxies?" "Curiosity motivates both exploration and learning in schools, science centers, colleges and universities." 05-10 NASA Looks for Extraterrestrial Life (CNN News) "As NASA prepares to hunt for Earth-like planets in our corner of the Milky Way galaxy, there's new buzz that 'Star Trek's' vision of a universe full of life may not be that far-fetched." "In a paper published recently in the International Journal of Astrobiology, the researchers concluded that based on what they saw, at least 361 intelligent civilizations have emerged in the Milky Way since its creation, and as many as 38,000 may have formed." 02-09 Potentially Habitable Planet Found (CBS News) "A potentially habitable alien planet — one that scientists say is the best candidate yet to harbor water, and possibly even life, on its surface — has been found around a nearby star.The planet is located in the habitable zone of its host star, which is a narrow circumstellar region where temperatures are neither too hot nor too cold for liquid water to exist on the planet's surface." 02-12 Search for Extraterrestrial Intelligence Life (SETI.org) The Search for Life on Other Planets (CNN News) "So what it comes down to is this: While there may be other life out there, the reality is that the universe is such a big place, we’re not going for a visit to our celestial neighbors anytime soon." 11-11 Two Earth-Sized Planets Discovered (Wall Street Journal) "Using NASA's Kepler space telescope, astronomers discovered two Earth-size planets orbiting a distant star--the smallest of all the thousands of alien worlds detected so far, Lee Hotz reports on the News Hub. Photo: NASA." 12-11

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