homogenisation

Homogenisation of temperature data is a sore point with climate sceptics as it air brushes out the warmth of the 1930s and the 1870s. In other words, the warmest decades of the 60 to 70 year solar cycle do not show up as they should. Philip Lloyd, writing at https://wattsupwiththat.com/2017/01/28/homogenization-of-temperature-dat... ...

10,000 years

    ... This chart is interesting not just for the periods of warmth but for the incidents of cold. The 8000 years ago event sticks out like a sore thumb (6200BC) and likewise an event just before 5000 years ago and around 4300 years ago. In contrast, we don't have a cold blip at 1200 or 1000BC to qualify as the end of Late Bronze Age event. Instead, it is very warm. Why would that be? Was something different going on?

Trilobites

Trilobites look like ancient woodlice but they differ in that they lived in the sea and had soft parts. They go back 450 million years ago - very old on the tree of life ...

Moon, Mars, and Flares

At https://phys.org/print404637022.html ... isotopic similarities in material that formed the earth and the moon. Where did it all come from and when did they arrive? In Nature (Jan 25th) we are told earth accreted from an isotopically homogenous reservoir. Soon after the earth formed 4.5 billion years ago, and as its core grew, that same core attracted metals (arriving from space). The material that makes up enstatite meteorites (also defined as chondritic) make up a great part of the earth. In addition, the moon is isotopically similar also.

Someone must be ...

Someone must be reading New Scientist on a regular basis as at http://crev.info/2017/01/secular-ocean-theory-evaporates/ ... they are once again blinking in the headlights according to the chap at this link. This time the story involves the origin of the oceans - where did all that water come from. We might well ask as the dominant theory for some time has been that it was delivered by comets and meteorites.

Megafauna Extinctions

A tale of two theories - both of them inadequate in their own ways. At https://phys.org/print404103492.html ... we have the claim humans wiped out Australian megafauna which just happens to fall hard on the heels of the news that Australian Aborigines  were living in interior Australia between 45,000 and 49,000 years ago (conveniently just prior to the extinction of the megafauna). The paper is in Nature Communications (Jan 20th 2017) but involves some very interesting information about climate as a result of a sediment core off the SW coast (on the continental shelf).

Dansgaard-Oeschger

At https://phys.org/print404556950.html ... Dansgaard-Oeschger events are sudden and dramatic episodes of warming that litter the last Ice Age period. They are thought to be associated with natural instabilities, or tipping points in climate change rhetoric. This is mostly because any other explanation seems to be less likely.

Ancient Ghana

At https://archaeologynewsnetwork.blogspot.co.uk/2017/01/ancient-figures-re... ... Ghana had gold and slaves. It therefore became a magnet and attracted merchants from the other side of the Sahara. Whether this included traders in the Roman period or not it unclear but it certainly did in the Islamic ascendancy between the 6th and 13th centuries AD. As such, Ghana was keyed into a massive trade network from China and Indonesia to Spain, a network of trade routes.

More Wetting Sahara

At https://phys.org/print404473128.html ... the subject is cooking plant material in pots. Cooking leaves behind a residue that modern science can translate into what was being cooked - even though those pots, usually found as sherds, may be thousands of years of age. This is a remarkable achievement in itself and a scientific tool unavailable to earlier archaeologists. It all comes at a price of course and the sponsors of any dig must have the funds to pay for it, and C14 dating. In other words, not something your low funded communal type dig could afford.

Mayan Collapse

This story is crawling all over the Internet this week and see http://popular-archaeology.com/issue/winter-2017/article/archaeologists-... ... which is a bit of a non story as all they appear to have done is come up with two sets of dates when things went wrong for the Maya. Instead of a gradual decline, as in previous studies, the contention in this research is that it occurred primarily at two points in time (possibly by narrowing down C14 methodology to tweek the specifics).