This is my last post in 2020, a really magic year for all of us. If someone asks me about my greatest gains this year, I

Today’s Topic is about Human Challenge TrialEvery minute, there will be hundreds of people getting infected by COVID19.

First let’s do some review about reading and writing txt filesread data in txt file(many lines), as below write data to

The price of real estate in Shenzhen has gone through a significant change, with a percentage of $\frac{2000}{55000}$. B

Rigid Body and Space, an Easy Introducntion to PhysicsThis article is based on a very good essay in Harvard University i

Lecture on Using Breath Collectors to Study Diet Changes of Migratory BirdsBirds choose to eat different food in differe

A Lecture on Life ExplosionThere is a Cambrian period when single cell life evolved into multicellular forms. And geosci

Now Biden and Harris have won the presidential election in 2020. I am curious about whether democrats can still win the