https://news.oregonstate.edu/news/six-million-year-old-ice-d...
The oldest ice disappears and the Stone Age emerges from it (sciencenorway.no)
pugworthy 11 hours ago
x______________ 8 hours ago
And they're working on finding even older!
"Given the spectacularly old ice we have discovered at Allan Hills, we also have designed a comprehensive longer-term new study of this region to try to extend the records even further in time, which we hope to conduct between 2026 and 2031"
pugworthy 7 hours ago
One of the presentations was on this research, and I was somewhat amazed the new stretch goal is to find 10 million year old ice. More power to them!
assimpleaspossi 9 hours ago
kadoban 4 hours ago
"Normal" is probably not a very useful framing. We're currently in an interglacial period in an ice age. So, on one scale we'd expect ice there, on one scale we'd not. On another scale we're just waiting for the sun to swallow the Earth and burn it all away. What's "normal" out of that?
If you happen to be asking if the current human-caused warming is an issue, yes it is. The Earth doesn't care, and "normal" doesn't care. We do though, we're fucking up our environment pretty good and it's causing misery and death.
Turskarama 3 hours ago
As was stated "normal" is not really a useful framing. It has at various times been both "normal" for the glaciers to extend much further south, and it has also been "normal" for the earth to have no glaciers at all. When thinking about climate change the issue is not that the climate IS changing, but rather how quickly. There is no evidence that global climate has ever changed as quickly as it is today, with the fastest rates we have evidence for being on the order of 1 degree every thousand years, as compared to the current rate of about 1 degree per 50 years.
chrisco255 12 hours ago
jacquesm 10 hours ago
spockz 10 hours ago
jacquesm 7 hours ago
userbinator 4 hours ago
Ironically it's made of petroleum, which is the decayed remains of prehistoric organisms.
jacquesm 3 hours ago
faangguyindia 3 hours ago
lexicality 12 hours ago
dieselgate 11 hours ago
AlotOfReading 11 hours ago
There's no real reason to immediately protect the find from light handling when it's discovered. It's a dirty object that's still coated in whatever was floating around the environment for those thousands of years. The rock will be fine and probably handled multiple times before it gets back to an archive.
I think the only times I've worn gloves in the field were for a very rusty metal dagger and some especially sensitive human remains.
mncharity 7 hours ago
I wonder, might one instead make an argument that it's not currently economic-technologically feasible to avoid artifact surface information destruction and contamination, at any stage of the dig-to-archival-conservation pipeline, nor to extract whatever information might be there, outside of very rare cases? Rather than there's no information there to lose?
Perhaps it becomes possible-and-affordable at some point, to frequently check, say, "oh neat, here are some 10 um notches on the surface, with some nice yeast, and some pollen, and oh, maybe that's a bit of calcified biofilm for nanopore DNA?"? Does automated lab tech progress, someday make "brushed, handled, dusted, washed, and shelf in the basement" start sounding like 19thC "we accessed the site using dynamite"?
apothegm 6 hours ago
narnarpapadaddy 4 hours ago
AlotOfReading 4 hours ago
Moreover, just being in the general vicinity is enough for us to leave behind contamination, since humans (and all other animals) constantly shed detectable eDNA into the environment. And even if they wanted to deal with this complexity, the budget for an entire project's archaeological testing is often less than my coworkers' monthly token budgets. You might get less than a dozen radioisotope, TL, or dendro tests for the entire thing, let alone anything more expensive.
thenthenthen 8 hours ago
PowerElectronix 13 hours ago
throwaway173738 12 hours ago
kzrdude 12 hours ago
The climate is varying in long cycles, and the deglaciation 20 thousand years ago (last glacial maximum) was driven by a spike in summer temperatures, and this peak has already long passed. Ice ages and interglacial periods have a certain momentum to them, so it takes more than just that to go back to full ice age..
chrisco255 12 hours ago
mistrial9 11 hours ago
chrisco255 9 hours ago
fc417fc802 9 hours ago
Cerium 6 hours ago
autoexec 10 hours ago
ant6n 10 hours ago
AI is in.
paulryanrogers 9 hours ago
SoftTalker 7 hours ago
paulryanrogers 7 hours ago
We don't have to be slaves to unregulated markets or the oligarchs they naturally breed.
IrishTechie 2 hours ago
seb1204 6 hours ago
jareklupinski 9 hours ago
trismus 9 hours ago
yako21000 9 hours ago
autoexec 6 hours ago
jandrewrogers 4 hours ago
parineum 8 hours ago
trismus 24 minutes ago
Razengan 6 hours ago
quotemstr 8 hours ago
The heroic efforts of early industrialists adding carbon to the atmosphere avoided this calamity and set us up with a level of comfy and productive climate unknown in the quaternary.
Amazing how humanity keeps lucking out like this.
didgetmaster 7 hours ago
gAI 12 hours ago
octaane 8 hours ago
skeledrew 10 hours ago
SoftTalker 7 hours ago
mikert89 12 hours ago
Creamsicle47 11 hours ago
taneq 5 hours ago
bpbp-mango 11 hours ago
pestatije 9 hours ago