Today, the Royal Society in London kicks off a conference
on the Search for Extraterrestrial Intelligence (SETI), which celebrates its 50th anniversary this year. In one session, Arizona State University physicist Paul Davies will explain why he thinks we should be looking in our own backyards to support the possibility that life evolved on other planets. For example, US Geological Survey scientist Felisa Wolfe-Simon
is exploring whether "alien" lifeforms could thrive in aresenic-contaminated environments that would seem to be a bit, er, inhospitable. Davies addresses some of these ideas in his forthcoming book, The Eerie Silence: Renewing Our Search for Alien Intelligence
. From The Times Online:
Professor Davies will argue that demonstrating that life has appeared more than once on Earth would be the best evidence yet that it must exist elsewhere in the Universe.
"Royal Society meet to discuss if extra-terrestrials are here on Earth"
He told The Times: "We need to give up the notion that ET is sending us some sort of customised message and take a new approach."
According to Professor Davies, "weird" microbes that belong to a completely separate tree of life, dubbed the "shadow biosphere", could be present in isolated ecological niches in which ordinary life struggles to survive. Likely hiding places include deserts, scalding volcanic vents, the dry valleys of Antartica or salt-saturated lakes.
Not all are convinced by the "shadow biosphere" concept. Colin Pillinger, who led the Beagle 2 Mars landing mission, said: "I prefer to deal in scientific fact -- this is wildly science fiction. You'd be off your trolley to go searching for arsenic-based life."
Professor Pillinger, who is due to speak at the Royal Society today, argues that Mars remains the best bet for finding alien organisms.
Frog tongue mechanism has been well-documented, but only recently have scientists started looking at the remarkable combo of tongue softness and frog spit’s chemical makeup.
Elenco’s Night ‘n Day Mechanical Globe uses a system of translucent, exposed gears to rotate an internally illuminated globe that displays the seasonally adjusted, real-time night/day terminator as it spins.
KSU plant biochemical geneticist Raj Nagarajan describes the properties of Thaumatin, Monellin and Brazzein, all found in west African plants that are generally considered safe for consumption; each is a protein, and they are, respectively, 1,000x, 2000x, and 3000x sweeter than sugar.
Not all hackers are malicious information thieves—white-hat ethical hackers work with technology companies to ensure the security of their computer systems and user data. With all of today’s high-profile data breaches, ethical hackers are in considerable demand. To learn these critical skills and break into the high-paying cyber security field, try taking the courses in this […]
Making people aware of goods and services in the digital age requires an array of new strategies from social media and email to number-crunching tools like Google Analytics. To get a handle on the techniques used to capture attention and convert traffic into dollars in a crowded online environment, the Full-Stack Marketer Bundle offers 22 hours of training to get […]
Having a luxurious bed isn’t just a fairy tale from a catalog; it is a real, affordable possibility with offerings like this Olive+Owen bedroom set. If you’re thinking of doing some “spring cleaning”, this bed set is an easy way to completely upgrade your room in one purchase.This 20-piece collection has all of the expected slumberland elements, […]