Members banned from this thread: BRUTALITOPS, Minister of Truth, Blackwater Lunchbreak, The Anonymous, /MSG/, USFREEDOM911, cancel2 2022, PostmodernProphet, Legion, Truth Detector, Legion Troll, Boris The Animal, philly rabbit, Niche Political Commentor, canceled.2021.2, J Craft, MAGA MAN, Darth Omar, CFM, DBCooper, chink, Superfreak, PraiseKek, TOP, excommunicated, AnnieOakley, Tommatthews, Q-Tip, volsrock, Grugore, Rob Larrikin, BodyDouble, ptif219, Loving91390, fandango, United76America, Yurt, Into the Night, Tkaffen, gfm7175, Enlightened One, Anarchon, Proud Boy, Earl, Nate Higgers, Terri4Trump and Lord Yurt |
Cypress (09-16-2019)
A very good point.
The other advantage of water is that it exists as a liquid at fairly moderate temperatures, zero C to 100 C. Those temperatures are favorable to the kinetics of biochemical reactions.
Even if life could supposedly develop in the presence of liquid methane or liquid ammonia, those compounds can only be in liquid form at extremely cold temperatures. At those temperatures, the kinetics of chemical reactions slow down to a crawl.
So, at this point it is reasonable to look for life on exoplanets that are plausibly in a habitable zone around stars conducive to the presence of liquid water. It does not hurt to speculate about other types of life, but focusing on the search carbon based life and liquid water is obviously the most sensible approach.
domer76 (09-16-2019)
If you think the theory of evolution and Charles Darwin are frauds, you have a lot of company and soul mates in conservatism and the Republican Party.
You American conservatives are the only major political party on the planet I know whose memebers routinely denies evolution, and clings to a young earth creationist fantasy.
The bolded part of your post is patently false and incorrect.
Transitional Fossil reveals transitional link from fish to four-legged tetrapods"A fish(cold blooded) creature has never EVOLVED into a Mammal (warm blooded) creature....as suggested by evolutionists. There is not one example of any creature caught in between species change i.e., Transitional(i.e., the supposed missing link) in the fossil record."
https://www.washingtonpost.com/natio...9b2_story.html
https://www.sciencedaily.com/release...0113154211.htm
What has the head of a crocodile and the gills of a fish?
Tiktaalik, of course. Pronounced tik-TAA-lik, this 375 million year old fossil splashed across headlines as soon as its discovery was announced in April of 2006. Unearthed in Arctic Canada by a team of researchers led by Neil Shubin, Edward Daeschler, and Farish Jenkins, Tiktaalik is technically a fish, complete with scales and gills — but it has the flattened head of a crocodile and unusual fins. Its fins have thin ray bones for paddling like most fishes', but they also have sturdy interior bones that would have allowed Tiktaalik to prop itself up in shallow water and use its limbs for support as most four-legged animals do. Those fins and a suite of other characteristics set Tiktaalik apart as something special; it has a combination of features that show the evolutionary transition between swimming fish and their descendents, the four-legged vertebrates — a clade which includes amphibians, dinosaurs, birds, mammals, and of course, humans.
https://evolution.berkeley.edu/evoli...0501_tiktaalik
Last edited by Cypress; 09-17-2019 at 08:45 AM.
120,000-year-old footprints offer early evidence for humans in Arabia
By Ann Gibbons Sep. 17, 2020 , 5:05 PM
One day about 120,000 years ago, a few humans wandered along the shore of an ancient lake in what is now the Nefud Desert in Saudi Arabia. They may have paused for a drink of fresh water or to track herds of elephants, wild asses, and camels that were trampling the mudflats. Within hours of passing through, the humans’ and animals’ footprints dried out and eventually fossilized.
Now, these ancient footsteps offer rare evidence of when and where early humans once inhabited the Arabian Peninsula. “These are the first genuine human footprints of Arabia,” says archaeologist and team leader Michael Petraglia of the Max Planck Institute for the Science of Human History.
The Arabian Peninsula has long been considered the obvious route that early members of our species took as they trekked out of Africa and migrated to the Middle East and Eurasia. Stone tools have suggested ancient humans explored the Arabian Peninsula at various times in prehistory when the climate was wetter and its harsh deserts were transformed into green grasslands punctuated with freshwater lakes. Yet so far, researchers have only found a single human finger bone dating to 88,000 years to prove modern humans, rather than some other hominin toolmaker, lived there.
https://www.sciencemag.org/news/2020...-humans-arabia
Bookmarks