Last Wednesday two women won the nobel prize in Chemist. They discovered a molecular system called CRISPR/Cas9 which essentially is a natural process in some bacteria to be protected from some virus. Why is this molecular system so important? because it allows to cut a specific part of any DNA and replaces it for another one in a highly accurate way. This work used to be hard even impossible, it used to take a lot of and time, it was expensive and very imprecise. How does it work? To summarize, Dr Emmanuelle noticed in some bacteria that some of them were able to survive to certain virus by a peculiar mechanism. She discovered this mechanism in which, part of the viral DNA was copied in the bacterial DNA. The molecule Cas9 looks for specific viral DNA sequences, cut them and copy them in the molecule CRISPR. With the help of Dr. Jennifer Doudna, they developed this natural process in a lab and now it's the most powerful tool to modify genes. This genetic tool has been used since its publication in 2012 in all over the world. Some of it uses are for example, the development of stronger and upgraded vegetales and fruits, there are researchings to cure different diseases such as HIV, cancer, diabetes, inherited diseases, etc And some potential uses in a near future are the design of babies with upgraded skills or even to stop the anging. Of course, there are some ethical issues and it still needs regulation, for example for the use in human embryo. Actually, in 2018 there was a genetic modifitication in an embryo to cure HIV, the scientiest cut a DNA sequence that allows the virus gets into the human cell. Unfortanely we don't know well what happened with them. It is said that they are healthy. This case was controversial because we still don't know other future consequences of this change in their DNA. *Please correct me. I will accept any advice or changes I need to do in my writing. I will appreciate it. Thanks.

Trying to practice what I am learning during the week (1) I would like to talk about how to use "wish" in English . I have learned that we use the verb "wish" to express something that we can't do at the present but we would like to do, or to express regret about something that we can not do at the present. According to the grammar rules after "wish" we use the verb in past tense or could + infinitive verb , for example: I wish I were rich to travel around the world. Oh¡ I forgot something ,most of times after using "wish" we use "were" for all pronouns but it also acceptable to use "was" for I, he, she ,it, for example it's possible to say " I wish I were..." or " I wish I was..." , I wish he was.." or " I wish he were..." , etc. Ok, other examples : I wish I could understand these lessons of English, haha. I wish I could help you. He wishes his dreams could be reality ( I am not sure about this example). Well, in general we use "wish" and then the past tense even if the sentence have a negative meaning, for example: I wish I didn't have a lot work this week. I think this kind of sentences are tricky for me and I usually forget that I have to use the auxiliar "didn't" to express the negative past tense. I always make these kind of mistakes because my mother tongue is Spanish and we don't use these kind of auxiliaries. I hope after writing this text I don't forget this kind of sentences, haha. One more thing, I think it's interesting how the languages work, in this case it could be strange for me for example that in English is correct to say "I wish I were" or " I wish I was" and it's so strange to use the paste tense to express something that happens in the present, but I've learned that it's just the language. About this topic in Spanish we use the subjuntive of the verbs, I mean verbs in Spanish are conjugated in subjuntive form to express regret or to express a wish. Every language work in different ways, and that is beautiful about learning a new language. On more thing else haha, I know grammar is not that important but I think it's neccesary. *I hope anyone who read this text can help me with other expressions that I could replace to express myself better. Thanks :)

English class task : talking about my favourite children's movie I'm going to talk about one of my favorite children's movies . It's toy story. Well, I will be honest, I didn't want to talk about this movie, but when we had to choose one, one of my classmates chose first the movie I wanted to talk about,Shrek, so I had to choose another one quickly and the first one that came to my mind was Toy Story. Actually, I didn't remember almost anything about the movie, because I watched it when I was so child, I think when I was 5 or 6 years old, I remember that I watched it on videocassette , yes those old and big videocassettes, with my brothers who were also children, but a little bigger. I'm going to talk a little about the movie, the main characters are Andy, who is a boy who is 6 years old, well the movie starts when they were celebrating their 7 year birthday, woody who is a cowboy or sheriff toy, I'm not sure, and buz lightyear who is an astronaut or something like a space warrior. One of the scenes that I remember a lot when I watched it for the first time is the first scene, when the soldier toys had to investigate what were the new gifts for Andy, I remember that I was excited because the soldier toys were one of my favorite toys. another scene that I also remember is when woody and buzz had to reach andy's car, because he was moving and it was the time buzz could fly whit the help of a rocket and said his most known phrase: to infinity and beyond¡¡

My dog Riki I would like tell you about my pet, it's a dog called Riki. My sister named it Riki and I don't sure why she decided named that and I've never asked her that why Riki, but it doesn't matter because it's a beautiful, fun and friendly dog. It's a little dog but we love it. The only problem is my grandma, I think she does it something or I don't know, but when she is close to Riki, it get a little angry and it start to get nervous, so in the mostly time they aren't togheter. I also have a cat, a black cat and at the begining , they were unfriendly, but now they play all the time. ** I have to change some expression to sounds better?