【アメリカ語勉強日記】

UN Brief

It's all about new president Biden's policy on UN: withdrawal of secession from WHO, rejoining Paris Agreement. It reminds me that a leftist, Koichi Toyama said that the US is virtually the world itself, we should have suffrage for the election of US.

CNN10

I don't remember many things, South Africa's safari seems attractive for me.

The Vital Question.

The author write the hydro thermal vent like black smoker couldn't bring the origin of life since its too reactive and essential materials are less likely to concentrate. Rather, he says that alkaline hydrothermal vents are the place where life started. There is sponge-like structure that allows concentration of organic materials and it also helps chemical reaction to generate such substances. For example, he experimentally showed that formaldehyde and deoxyribose is generated from H2 and CO2 in alkaline hydrothermal like structures thanks to the proton gradient caused by the acidic ocean and the alkaline rock and FeS wall. 

Furthermore, he insists that it is one of the most plausible ways of life origin anywhere in the universe, since the vent is one of the few structures that meet the requirements with common materials across the universe. For example, the rock composing the thermal vent is common in many planets and it is physically really hard to sequentially generate organic substances only from H2 or CO2 and accumulate them except for the condition the vent provides.