Sakha Republic

Today, I searched for Sakha Republic, which is one of 85 federal subjects of the Russian Federation.

Since Sakha Republic has recorded minus 71.2 Celsius degrees, which is the world's lowest temperature except for Antarctica, it is thought of as the cold pole in the Northern Hemisphere.

Also, when the temperature goes below minus 50 degrees, schools seem to be closed.

I think there are little people who are sick, because disease-causing bacteria can't inhabit such cold regions.

However, the temperature seems to goes up to almost 30 degrees in summer.

By the way, Sakha Republic is famous for diamonds, and one fourth of diamonds in the worlds is mined in Sakha.

The number of countries where I want to go increased today.

サハ共和国

今日はロシア連邦を構成する連邦構成主体の一つ、サハ共和国について調べました。

サワ共和国は南極を除くと世界最低気温となるマイナス71.2度を記録しており、北半球の寒極と考えられています。

また、マイナス50度を下回ると、学校は休みになるそうです。

これだけ寒いと病原菌も生息できないので、病気にかかる人は少ないと思います。

ただし、夏になると30度まで気温が上昇するみたいです。

ちなみに名産はダイヤモンドで、世界のダイヤモンドの1/4はサハ共和国産とのことです。

いつか行ってみたい国が一つ増えました。

• Today, I searched for Sakha Republic, which is one of 85 federal subjects of the Russian Federation.
• This sentence is perfect! No correction needed!

• Since Sakha Republic has recorded minus 71.2 Celsius degrees, which is the world's lowest temperature except for Antarctica, it is thought of as the cold pole in the Northern Hemisphere.
• Since Sakha Republic has recorded a temperature of minus 71.2 degrees Celsius, which is the world's lowest temperature except for Antarctica, it is thought of as the cold pole in of the Northern Hemisphere.

  * "a temperature of" isn't necessary here, but it sounds better with it included.
  * Temperatures in English are commonly written as "degrees Celsius/Fahrenheit."

• Also, when the temperature goes below minus 50 degrees, schools seem to be closed.
• Also, when the temperature goes below minus 50 degrees, schools seem to be closed.

• I think there are little people who are sick, because disease-causing bacteria can't inhabit such cold regions.
• I think there are little few people who are sick, because disease-causing bacteria can't inhabit such cold regions.

• However, the temperature seems to goes up to almost 30 degrees in summer.
• This sentence is perfect! No correction needed!

• By the way, Sakha Republic is famous for diamonds, and one fourth of diamonds in the worlds is mined in Sakha.
• By the way, Sakha Republic is famous for diamonds, and one-fourth of diamonds in the worlds is are mined in Sakha.

• The number of countries where I want to go increased today.
• The number of countries where I want to go visit increased today.

  Your original sentence was correct, but this change sounds a bit nicer.

• I think there are little people who are sick, because disease-causing bacteria can't inhabit such cold regions.
• Since disease-causing bacteria can't inhabit such a cold regions, I think that the sickness rate is lower than in other parts of the country.

• Today, I searched for Sakha Republic, which is one of 85 federal subjects of the Russian Federation.
• Today, I looked up the Sakha Republic, which is one of 85 federal subjects of the Russian Federation.

  look up = 調べる（辞書・ウィキペディア・などを）
  search for = 捜す（冒険者的な意味で）

• Since Sakha Republic has recorded minus 71.2 Celsius degrees, which is the world's lowest temperature except for Antarctica, it is thought of as the cold pole in the Northern Hemisphere.
• Since Sakha Republic has a record temperature of -71.2℃, which is the world's lowest temperature except for Antarctica, it is thought of as the cold pole in the Northern Hemisphere.

  "world record" の "record"

• Also, when the temperature goes below minus 50 degrees, schools seem to be closed.
• Also, when the temperature goes below -50℃, schools seem to close.

• I think there are little people who are sick, because disease-causing bacteria can't inhabit such cold regions.
• I think there are few people who get sick, because disease-causing bacteria can't inhabit such cold regions.

  ... except extremophiles. :P

• By the way, Sakha Republic is famous for diamonds, and one fourth of diamonds in the worlds is mined in Sakha.
• By the way, the Sakha Republic is famous for diamonds, and a quarter of the world's diamonds is mined in Sakha.

Fascinating! Speaking of diamonds: