The "Great Filter" is a hypothetical barrier to explain why civilisations are so unlikely to progress to the point of inter-stellar colonisation that we have not encountered any in 40 years of looking. Maybe humanity has already negotiated the filter - as some massive evolutionary improbability - or perhaps it lies in our future as an almost-certain threat to our existence? We should hold our breath as we look for evidence of life on Mars.
posted on May 12, 2008 - View this thread

Suspending Life. "If almost every species on Earth was killed some 250 million years ago, how did our ancient ancestors survive and evolve into us?"
posted on Apr 18, 2008 - View this thread

In Games, an Insight Into the Rules of Evolution. Carl Zimmer writes about Martin Nowak (previously mentioned here), a mathematical biologist who uses games to understand how cooperation evolved. [Via MindHacks.]
posted on Aug 11, 2007 - View this thread

A slideshow & timeline of life on earth - A timeline of human migration.
posted on Jun 4, 2007 - View this thread

Get A-Life - an interesting read on artificial life and evolutionary computation, from the game of life (playable applet), through core wars, tierra and on to genetic programming. This approach has recently borne fruit to genetic programming pioneer and inventor of the scratchcard, John Koza, who last year patented his invention machine, actually a 1000 machine beowulf cluster running his software, which has itself created several inventions which have been granted patents. [See also: BBC Biotopia artificial life experiment, another odd BBC evolution game, Artificial Life Possibilities: A Star Trek Perspective]
posted on May 3, 2006 - View this thread

As the Pentagon ousts plans to turn insects into cyber war machines you'd be forgiven for asking the question: Where does the real digital end and the faked life begin? Are we simulating life synthetically? or just speeding up an entirely natural process? Technologically engineered life is here to stay. Its not far fetched to speculate that simulacra may become all there is.
posted on Mar 15, 2006 - View this thread

Mating Leopard Slugs entwine - one of the untold wonders of the animal kingdom captured on video.... The BBC gets up close and personal with Life in the Undergrowth in their new wildlife documentary. A must see for any animal, insect or David Attenborough fan... (If the main vid link doesn't work for you try it from here - realplayer needed)
posted on Nov 23, 2005 - View this thread

The origin of life?! I heard from an authority in molecular biology today that a group of researchers funded by the Carnegie Institution and NASA believe they've discovered the origin of RNA, and with that, the origin of life. This new discovery grew out of NASA's Deep Impact mission to study the composition of comets. Specifically, they started investigating a kind of carbon that forms in layers, with each layer slighly offset from the previous one in a helix shape. Significantly, the thickness of these carbon layers corresponds with the thickness of each twist in a strand of RNA. It turns out that the individual building blocks of RNA are capable of bonding to this layered carbon when exposed to UV radiation. Once this has happened, apparently formaldehyde can then bond to the building blocks of RNA on the carbon "pattern", allowing the bonded RNA to slough off into the primordial soup. Over time, some of these RNA strands could fold and bond to themselves, forming DNA. Formaldehyde, the initial bonding material, would eventually be replaced by a more chemically sophisticated substance, creating the chemical bond that we observe today in DNA. Expect a paper on it to be released in approximately three months with all the details.
posted on Nov 6, 2005 - View this thread

Did the discovery of evolution lead to Darwin's agnosticism, as claimed? Carl Zimmer wonders. More importantly, can evolution be reconciled with Christianity?
posted on Aug 11, 2005 - View this thread

Fossil records show Biodiversity comes and goes in a 62 million year cycle. The analysis, performed by researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory and UBC, has withstood thorough testing so that confidence in the results is above 99-percent.
posted on Apr 8, 2005 - View this thread

The Tree of Life.
posted on Apr 26, 2004 - View this thread