There is an image of a red comet at www.dailygalaxy.com September 1st, being Comet Sidling Spring, which is named after the Australian observatory where it was first seen in 2007. It was visible in binoculars until January of this year (2010) and the post goes on to describe the idea of panspermia - the seeding of life by comets. Life on earth seems to have appeared soon after the termination of a massive bombardment event at around 3.8 billion years ago (so it is said).

New Scientist 2775 August 31st ... the discovery of what looks like a scalpel at an Early Bronze Age settlement at Ikiztepe in Anatolia (dating between 3200-2100BC). The site consisted of single storey houses made of logs of wood with a courtyard and oven in front. The scalpels are thought to have been used for surgery rather than ritual as some skeletons found in a graveyard exhibit evidence of skulls being cut open as if with a surgical instrument.

This is a paper by Kurbatov, Mayewski, Steffensen, West, the Kennetts, Bunch, and others which can be downloaded free in full text from http://cosmictusk.com August 31st. Recommended reading. Basically, a small layer of free nanodiamonds in very high abundances implies an unprecedented influx of extraterrestrial material  that occurred over the last glacial episode. From that layer nanodiamonds and hexagonal diamonds (lonsdaleite) of the order of many times grreater than background levels in adjacent younger and older ice.

An interesting post by Casey Kazan who continues to rattle the cage at www.dailygalaxy.com and posted on August 31st 'Do Jupiter's radio emissions hint that dark energy may not exist?' ... the cosmic microwave background as tracked by the WMAP satellite shows a pattern of ripples that underpin the idea the universe is composed of dark matter and dark energy. Researchers at Durham Univesity think they have found a flaw in the data - starting with WMAP observations of the planet Jupiter.